Alle künstlichen Hohlräume nach Ländern gruppiert
1603 künstliche Hohlräume werden auf showcaves.com am 20-JAN-2025 09:30 beschrieben
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Albania6 entries
Antigua & Barbuda1 entry
Argentina6 entries
Armenia7 entries
Aruba1 entry
Australia26 entries
Crocodile Harry- The Crystal Caves
- Darwin WWII Oil Storage Tunnels
- Desert Cave Hotel
- Digger's Dream Underground Home
- Down to Erth
- Fayes Underground Home
- Frank Aston Underground Museum
- Helensburgh Glowworm Tunnel
- Miners' Dugouts
- Museum of Old and New Art
- Newnes Glow Worm Tunnel
- Otto Photo Underground Photographic Gallery
- PJ's Underground
- Radeka's Downunder
- Ribas Underground Camping
- Serbian Underground Church
- Snowy Mountains Hydro-electric Scheme
- Tamborine Mountain Glow Worm Caves
- Underground Church
- Mount Isa Underground Hospital and Museum
- Underground Potteries
- The Underground Motel
- Unicorn Brewery Cellars
- White Cliffs
- Wonambi Fossil Centre
Austria25 entries
- Third Man Tour
- Auracher Löchl
- Casino Keller
- Dom Im Berg
- Dachstein Eispalast
- Österreichisches Felsbildermuseum
- Graselhöhle
- Grottenbahn am Pöstlingberg
- Herzgruft
- Kaiserliche Schatzkammer
- Kapuzinergruft
- Bergbaumuseum Klagenfurt
- Burg Loch
- Maximushöhle - The "Catacombs" of Salzburg
- Museum Festung Nauders
- Petersfriedhof Katakomben
- Kellergasse Purbach
- Retzer Erlebniskeller
- Höhlenmuseum Schönbergalm
- Eisgrotte Stubaier Gletscher
- Unknown Underground Vienna
- Virgilkapelle
- Sub Terra Vorau
- Wienerwaldmuseum
- Bunkermuseum Wurzenpass
Bangladesh1 entry
Belgium13 entries
Bermuda1 entry
Bhutan2 entries
Bosnia and Herzegovina2 entries
Bulgaria19 entries
- Aladzha Monastery
- Aleksandrovo Thracian Tomb
- Alexander Nevsky Cathedral Underground Crypt
- Basarbovo Cave Monastery
- Museum of Speleology and Bulgarian Karst
- Ivanovo Rock Churches
- Kazanluk Tomb
- Museum of Mineralogy, Petrology and Mineral Resources
- Temple in the Tomb of Ostrusha
- Pleven Wine Museum
- Regional Natural History Museum
- Thrakian Tomb "Hollow Mound" Pomorie
- Cave of St. Ivan Rilski
- Cave of St. Ivan Rilski near Skrino
- Serdika Metro Station
- Tomb of Seuthes III
- Skalen Manastir Shashkanite
- Archaeological Level of St. Sophia Basilica
- Ginina Mogila - Thracian Tomb of Sveshtari
Canada5 entries
China50 entries
- Underground Project 131
- 816 Military Nuclear Plant
- Astana Underground Museum
- Beihai Tunnel
- Beishiku Si
- Bezeklik Thousand Buddha Caves
- Changyu Dongtian - Changyu Stone Cave
- Daciyan
- Dahan Stronghold
- Daxiangshan Grottoes
- Dazu Grottoes
- Di Shui Dong
- Dunhuang Mogao Caves
- Fromosa Boulevard Station
- Underground Great Wall
- Gurugem Phuk
- Guyaju Caves
- Haikong Cave
- Hantongshan Shenxian Dong
- Huashan Quarries
- Huayan Temple
- Jindeng Temple
- Kizil Caves
- Kunming Natural History Museum of Zoology
- Longmen Grottoes
- Longyou Caves
- Maiji Shan Caves
- Nanshiku Temple
- Pangju Cave
- Qingtian Hall
- Sanmenxia Yaodong
- The Shelter
- Shengjinkou
- Shimao Wonderland Hotel
- Shuiliandong
- Silver Stream Cave
- Stone Cavehouse Hotel
- Tianti Grottoes
- The Grottoes of Toyuk
- Tunnel 88
- Tuyuq Khojam Mazar
- Beijing's Underground City
- Wanfotang Grottoes
- Xuan Kong Si
- Yangling Museum
- Yuhuang Cave
- Yulin Grotto
- Yungang Grottoes
- Zhaishan Tunnel
- Zhangfang Ancient Battle Tunnel
Colombia2 entries
Costa Rica3 entries
Croatia11 entries
Cyprus13 entries
- Saint Barbara Cave Church
- Agios Spyridon
- Ayias Solomonis Cave Church and Catacombs
- Ayia Thekla Cave Church
- Ayioi Saranta Cave Church
- Ayios Sozomenos Cave Church
- Cave of the Cyclops
- Egkleistra
- Tombs of the Kings
- Panagia Chrysopiliotissa Church
- Church of Panagia Evangelistria
- Panagia Vounarkotissa
- The Cave Bar
Czech Republic46 entries
- Pavilon Anthropos
- Jeskyně Blanických rytířů
- Brněnská kostnice
- Chrám kamene
- Přečerpávací vodní elektrárna Dlouhé Stráně
- Dolní Vĕstonice
- Ekotechnické Museum
- Grotesquery
- Hotel Jalta Bunker Museum
- Hrad Houska
- Dělostřelecká Tvrz Hůrka
- Husitské muzeum
- Jihlavské podzemí
- Josefov Podzemi
- Cizinecký vstup do kanalizace
- Kapucínská krypta
- Klatovské katakomby
- U Krále Brabantského
- Vinárna U Královny Elišky
- Kryt 10 - Z
- Kryt Denis
- Labyrinth pod Zelným trhem
- Zámecké sklepení Litomyšl
- Magická Jeskyně
- Malovaný sklep
- Mělnické Podzemí
- Sklep pod Novou Radnicí
- Modlivý důl
- Muzeum vltavínů
- Moravská Banka Vín
- Národi Technické Muzeum
- Bunkr Parukářka
- Pivnice Pegas Jakubská
- Petrov Plže
- Plzeňské historické podzemí
- Prosek hill
- Pusté Kostely
- Rudolfova štola
- Moravský sklípek
- Kostnice v Sedlci
- Pivnice U Šneka
- Středověká Krčma
- Valtice sklípek
- Vodojemy Brno
- Restaurant Železná Růže
- Znojmo Podzemi
Denmark9 entries
Dominican Republic2 entries
Egypt7 entries
Estonia6 entries
Ethiopia2 entries
Faroe Islands1 entry
Finland6 entries
France185 entries
- Caves Ackerman
- La Grotte de Glace Alpe d’Huez
- Ami Chenin
- Cluzeaux d'Argentine
- Arles Cryptoportiques du Forum
- Atlantikwall
- La Carrière d'Aubigny
- Aux Vieux Logis
- Barry troglodyte village
- Crypte du Bayaà
- Parc archéologique de Beynac
- Citadelle de Bitche
- Petit Ouvrage du Bois de Bousse A24
- Bollinger
- Les Caves Bouvet-Ladubay
- Les Boves
- Parcours troglodytique de l'Abbaye de Brantôme
- Château de Brézé
- Aqueduc Souterrain de Briord
- Campement préhistorique de Bruniquel
- Manoir de la Caillère
- Grottes de Calès
- Canard Duchene
- Oriu di i Canni
- Carrières des Capucins
- Souterrain médiéval du Castela
- The Catacombs of Paris
- Cathedrale d'Images
- Les Cathédrales de la Saulaie
- Cave des Producteurs de Montlouis
- Roc de Cazelle
- Le Musée du Champignon
- Grotte Chauvet 2 Ardèche
- Oriu de Chera
- La Cité du Volcan
- Le Clos des Roches
- Grottes du Cornadore
- Gabriel Coulet
- Maison des Pierreux de Crazannes
- Crypte archéologique de l’île de la Cité
- Heidenkapelle
- De Castellane
- Muches de Domqueur
- Fort de Douaumont
- Caverne du Dragon
- Kasematte Edling Süd
- Eglise monolithe Saint Jean
- Le Blockhaus d'Éperlecques
- Casemate Esch
- Esterlin
- Le Faux Saulnier
- Domaine Filliatreau
- Abbaye Royale de Fontevraud
- Fort Casso
- La Fosse de Forges
- Ouvrage du Four-à-Chaux
- La Grotte de Gaulier
- Les Caves de la Genevraie
- Vallée troglodytique des Goupillières
- Champagne Alfred Gratien
- Maisons troglodytes du Graufthal
- Caves Louis de Grenelle
- Gros Ouvrage A19 Hackenberg
- Musée de l'Abri de Hatten
- Les Hautes Roches
- Restaurant l'Hélianthe
- Grottes troglodytes de la Jaubernie
- Grottes de Jonas
- Les Journées de la Rose
- Feste Kaiser Wilhelm II
- Restaurant La Cave
- La Coupole
- La Grotte de Glace La Grave La Meije
- Lanson
- Les Lapidiales
- Fort Troglodytique de La Roque Gageac
- Launois Père & Fils
- Laurent-Perrier
- Le Caveau
- Le Prince Noir
- La Grotte de Glace Les Arcs
- La Grotte de Glace Les 2 Alpes
- Musée National de Préhistoire
- Musée de la Libération de Paris
- Carrières de la Lie
- Lutetia´s Sewer System
- Magnanerie de Bourré
- Mailly Grand Cru
- Maison Forte
- Domaine de Marc Brédif
- Musée Mémorial de la Ligne Maginot du Rhin
- Les Caves de Marson
- G.H. Martel et C°
- Maison des Pierreux de Massangis
- Medieval Louvre Underground
- Mercier
- Grotte de la Mer de Glace
- Ouvrage du Michelsberg
- La Forteresse de Mimoyecques
- Moët & Chandon
- La Cave Aux Moines
- Les Caves Monmousseau
- Réservoir de Montsouris
- Tunnel du Mortier
- G.H. Mumm
- Musée du Vin
- La Cité Souterraine de Naours
- Horreum de Narbonne
- Casemate de Neunhoffen
- La Crypte Archéologique de Nice
- Pigeonnier de la Niverdière
- Feste Obergentringen
- L'Orbiere
- Le Musée de l'Ours de Cavernes
- Fromageries Papillon
- Parc de la Préhistoire
- Musée des Egouts de Paris
- Métro de Paris
- Musée d'Art et d'Archéologie du Périgord
- Grottes de Perrier
- Centre des Perrières
- Perrier-Jouët
- La Petite Perrière
- Pierre et Lumière
- Maison de la Pierre de Volvic
- Piper Heidsieck
- Pommery
- Le Troglo des Pommes Tapees
- Le patrimoine souterrain de Pontoise
- Le Prehistorama
- Préhistorama Châtelperron
- Cave du Prieuré
- Caves de Rauzan
- Le souterrain de la Règle
- Les grottes du Régulus et des Fontaines
- Reims Cryptoportique
- Casemate Rieffel
- Carrière Souterraine de Rinval
- Roc-aux-Sorciers
- Village troglodyte Rochemenier
- Cave des Roches
- Ruinart
- La Sablière
- Grottes de Saint Antoine
- Ermitage Saint Antoine De Galamus
- Église troglodytique Saint-Christophe
- Ouvrage Sainte-Agnès
- Église Monolithe Saint-Émilion
- Carrière Saint-Just
- Champignonnière St Maur
- Grottes de Saint-Maurin
- Cluzeaux de Saint-Pardoux-de-Mareuil
- Les Grandes Caves Saint Roch
- L'Abbaye troglodytique de Saint-Roman
- Grotte de Saint-Vit
- Troglodytes & Sarcophages
- Champignonnière du Saut-aux-Loups
- Fort de Schoenenbourg
- Caverne Sculptée
- Simserhof
- Siracourt VI Storage Bunker
- Société des Caves de Roquefort
- Musée Somme 1916
- Parcours Troglodytique Souzay-Champigny
- Grotte Taillerie du Puy de Dôme
- Champagne Taittinger
- Terra Vinea
- Le Thot
- Troglododo
- Village Troglodyte de Trôo
- Préhisto Parc
- Fort d’Uxegney
- La Grotte de Glace Valloire
- Fort de Vaux
- Veuve Clicquot
- Carriere de Vignemont
- Demeure de la Vignole
- Villecroze Caves
- Chateau Villemaurine
- Fort de Villey-le-Sec
- Vimy Memorial - Grange Tunnel
- Vulcania
- Le Fort Wagner
- Wellington Caves
- Zoo de Doué la Fontaine
Georgia10 entries
Germany113 entries
- Alter Elbtunnel
- Atomkeller
- Auerbachs Keller
- Berliner Unterwelten
- B-Werk Besseringen
- Eiskeller der Brauerei Beuing
- Birresborner Eishöhlen
- Höhlenburg Buchfart
- Bundesbank-Bunker
- Atombunker der Bundesregierung
- Westwallmuseum Bunker 20
- Bunkermuseum Emden
- Bunkermuseum Hamburg
- Bunkermuseum Rennsteig
- Schloß Colditz Escape Tunnels
- Untertageverlagerung Dachs 1
- David Hasselhoff Museum
- Deinhard Kellermuseum
- Deutsches Bergbau Museum
- Deutsches Bunkermuseum
- Deutsches Museum
- Eisstollen Dornburg
- Museumsbunker Düppenweiler
- Dunsthöhle
- Egloffsteiner Felsenkeller
- Bunker Eichenthal
- Erbendorfer Felsenkeller
- Bunker WH-767 “Erlkönig”
- Bunker Falkenhagen
- Nürnberger Felsengänge
- Forchheimer Keller
- Höhlenmuseum Frasdorf
- Grüner Bräu Keller
- Führerbunker
- Atombunker Garzau
- Genovevahöhle bei Bell
- Geraer Höhler
- Grosser Atomschutz-Bunker in Güdingen
- Hilfskrankenhaus Gunzenhausen
- Bunker Hagen
- Mithrasgrotte
- Bunker Harnekop
- Hausertorstollen
- Zivilschutzbunker Helgoland
- Himmelsbergstollen
- Hohenfels-Essinger Eishöhlen
- Schloßberghöhlen
- Hubertuskapelle
- Bunker Ilbenstadt
- Isteiner Klotz
- Internationales Fledermaus-Museum Julianenhof
- Unterirdische Gänge Kaiserslautern
- Ausweichsitz Nordrhein-Westfalen
- Bunker am Kap Arkona
- Karl-May-Höhle
- Kessler Kellerführungen
- Air Defense Operations Center Kindsbach
- Klausenhöhle
- Klusfelsen
- Kulturbunker Barbarastollen
- Historischer Kunstbunker
- Kupferberg Museum
- Bunker Ladeburg
- Höhlenwohnungen in Langenstein
- Liboriusklause
- Höhlenburg Loch
- Löwengrube
- Maria im Stein
- Markt Höhler
- Höhler von Meerane
- Mineralienhöhler
- Mittelbau Dora - Mittelwerk Dora
- Neischlhöhle
- Die historische Grotte in den Herrenhäuser Gärten
- Oppenheimer Kellerlabyrinth
- Parkhöhle Weimar
- Peniger Kellerberggänge
- Burg und Festung Regenstein
- Eishöhle bei Roth
- Feste Rothenberg
- Saarbrücker Kasematten
- St. Salvator
- Schloß Stein
- Schwandorfer Felsenkeller
- Stollenanlagen am Stephansberg
- The Story of Berlin
- Tiergartentunnel
- Traben-Trarbacher Unterwelt
- Brunnenstollen Trippstadt
- Überlinger Stollen
- Ulmener Maar-Stollen
- Ulmer Museum - Archaeological Collection
- Centre for International Light Art
- Bunkerstollen Unterland
- Urgeschichtliches Museum in Blaubeuren
- Villa Fliedner
- Vulkan Brauerei
- Sandsteinhöhle in Walldorf
- Nürnberger Wasserstollen und Kasematten
- Kanaltunnel Weilburg
- Weißenstädter Kellerwelt
- Felsenkeller Kloster Weltenburg
- Westwallmuseum Pirmasens
- Westwallmuseum Irrel
- Westwallmuseum Bad Bergzabern
- Westwallmuseum Sinz
- Westwallmuseum Mettlach
- Westwallmuseum Wiltingen
- Westwallmuseum Konz
- Bunker Wollenberg
- Bunkerpark Wünsdorf
- Industriemuseum Zeche Hannover
- Unterirdisches Zeitz
Great Britain111 entries
- Anchor Church
- The Angel Microbrewery Cave
- Battle of Britain Control Room
- Beer Quarry Caves
- Bell Inn Caves
- Blair Street Underground Vaults
- Bounce Below
- Brighton's Victorian Sewer
- Bruce's Cave
- Bude Tunnel
- Burlington
- Cabinet War Rooms
- Café in the Crypt
- Caldecotte Project
- Cave Escape Nottingham
- Cavern Club
- The Channel Island Military Museum
- Channel Tunnel
- Chislehurst Caves
- Paddock - Churchill's Secret Bunker
- Crowborough Caves
- Cruachan Power Station
- Culver Hole
- Dewstow Gardens and Grottoes
- Dorking Caves
- Dragon Hall Undercroft
- Drakelow Tunnels
- Dudley Canal Tunnels
- Dunaskin Open Air Museum
- Tomb of the Eagles
- Electric Mountain Visitor Centre
- Essex Secret Bunker
- Euston Lost Tunnels
- Exeter's Underground Passages
- St Fillan's Cave
- Fort Amherst Tunnel Tour
- Fort Hommet Gun Casemate
- Jersey War Tunnels
- German Naval Signals Headquarters
- German Underground Hospital
- Gilmerton Cove
- Great Siege Tunnels
- Greenwich Foot Tunnel
- Guildhall Medieval Crypt
- Hack Green Secret Nuclear Bunker
- Halliggye Fogou
- Hand and Heart
- Hard Rock Vault
- Hawkstone Park
- Hellfire Corner
- Herts Young Mariners Base
- La Hougue Bie
- Humphrey Kynaston's Cave
- Innocent Railway Tunnel
- Ye Olde Trip to Jerusalem
- Jurnet's Bar
- Kelvedon Hatch Secret Nuclear Bunker
- Kinver Edge Rock Houses
- La Valette Underground Military Museum
- Lee Ice House
- Llewelyn's Cave
- London Underground
- Lost Caves
- Maeshowe
- Victorian Music Hall Malt Cross
- Margate Caves
- Margate Grotto
- Mary King's Close
- McGregor's Cave
- Mine Howe
- National Justice Museum
- Netherton Tunnel Branch Canal
- Noirmont Command Bunker
- Norwich Guildhall Crypt
- City of Caves
- Nottingham Castle Cave Tours
- Museum of Nottingham Life
- Ossian's Cave
- Painshill Park's Crystal Grotto
- Park Tunnel
- Porthcurno Telegraph Museum
- Queen Adelaides Chapel
- Queensway Mersey Tunnel
- Ramsgate Tunnels
- Redcliffe Caves
- The Reigate Caves
- Rhydymwyn Valley Works
- Royal Pavilion & Garden
- Royston Cave
- Ye Olde Salutation Inn
- Scotland's Secret Bunker
- Scott's Grotto
- Shunt
- London Silver Vaults
- Standedge Tunnel
- St Andrew's Hall Undercroft
- St Margaret's Cave
- St Peter's Bunker Museum
- Take 5 Bar
- The Bunker
- The Crypt
- Tilly Whim Caves
- Tregiffian Burial Chamber
- Tyne Tunnel
- Victoria Tunnel
- Western Approaches Command Centre
- West Norwood Cemetery Catacombs
- West Wycombe Caves
- Williamson's Tunnels
- World War II Tunnels
- Zigzag Path
Greece30 entries
- Agia Paraskevi
- Iepa Moni Agios Gerasimos
- Cave Church of Saint Nicholas
- Anaktos Santorini Cave Houses
- Cave Archangel Michael Panormitis
- Art Space Winery
- The Treasury of Atreus
- Cave Museum Santorini
- Cave Santorini Spa
- Divine Cave Experience
- Tunnel of Eupalinus
- Caves of Filopappou Hill
- Monastery Kaloritsa
- Kipina Monastery
- Koutsogiannopoulos Wine Museum
- Matala Caves
- Mega Spiléo - The Great Cave
- Catacombs of Milos
- Cistern of Ancient Mycenae
- Necromanteion of Ephyra
- Holy Cave Nymphaeum
- Panagia Spiliani
- Panagria Hrysospiliotissa
- Poli Cave House
- Cave of Saint Paul the Apostle
- SantoCaves
- Spilia Caves Santorini
- Symposion Cultural Center
- Acropolis of Ancient Tiryns
- Venetsanos Winery
Guam1 entry
Guatemala1 entry
Honduras2 entries
Hungary10 entries
Iceland4 entries
India57 entries
- Adalaj Stepwell
- Adi Kadi Vav
- Agrasen ki Baoli
- Aihole
- Ajanta Caves
- Amer Stepwell
- Aurangabad Caves
- Badami Cave Temple
- Bagh Caves
- Barabar Caves
- Bava Pyara Caves
- Bedsa Caves
- Bhaja Caves
- Bhandara Buddhist Caves
- Bhartrihari Caves
- Chand Baori
- Dada Harir Stepwell
- Dhank Caves
- Dungeshwari
- Elephanta Caves
- Ellora Caves
- Gavi Gangadhareswara
- Ghorawadi Caves
- Guhantara
- Huligemmana Kolla
- Hulimev Cave Temple
- Kanheri Caves
- Karla Caves
- Khambhalida Buddhist Caves
- Khandagiri Cave
- Caves of Khandepar
- Khapra Kodiya Caves
- Kondhane Buddhist Caves
- Kottukal Cave Temple
- Kuda Mandad Caves
- Lamgao Buddhist Caves
- Lenyadri Caves
- Mahabalipuram Caves
- Mahakali Caves
- Mahendravadi Cave Temple
- Nagarjuna Caves
- Navghan Kuvo
- Pandava Caves
- Pandavleni Caves
- Parvati Buddhist Cave
- Pataleshwar Cave Temple
- Peralassery Subrahmanya Temple Pond
- Phugtal Gompa
- Pitalkhora Caves
- Rani Ki Vav
- Son Bhandar Caves
- Toorji Ka Jhalra Bavdi
- Udaigiri Caves
- Undavalli Caves
- Uperkot Caves
- Vashistha Gufa
- Vettuvan Koil Temple
Indonesia6 entries
Iran11 entries
Iraq2 entries
Ireland5 entries
Israel34 entries
- Absalom's Tomb
- Bīr al-Anezīya
- Church of the Annunciation
- Beit She'arim National Park
- Bell Caves
- Tomb of Benei Hezir
- Benshoof Cistern Museum
- Knights Halls
- Grotto of Gethsemane
- Haritun Cave
- Hazan Caves
- Hezekiah's Tunnel
- Honi HaMe'agel
- Luzit Caves
- Ma'arat HaMachpelah
- Maresha
- Milk Grotto Chapel
- Grotto of the Nativity
- Cave of Nicanor
- Tomb of the Prophets
- Greek Orthodox Church of Saint Gabriel
- Shem Va'Ever Cave
- King Solomon's Quarries
- St. George Monastery
- St. Joseph's Church
- Templar Tunnel
- Monastery of the Temptation
- Cave of Treasures
- Treasures in the Walls Museum
- Underground Prisoners Museum
- Tomb of the Virgin Mary
- Warren's Shaft
- The Western Wall Tunnels
- Tomb of Zechariah
Italy165 entries
- Casa Grotta Antica Matera
- L'Astore Masseria
- Basiliani Hotel
- Battistero Neoniano
- Ddieri di Baulì
- Grotta dei Beati Paoli
- Ipogeo de Beaumont Bellacicco
- Il Borgo Ritrovato
- Bottini
- Buco di Viso
- Bunker Mooseum
- Grotta del Buontalenti
- Covolo di Butistone
- Calcata Cave Houses
- Eremo di Calomini
- Città sotterranea di Camerano
- Grotta del Cane
- Museo del Capitolo di San Lorenzo
- Catacombe dei Cappuccini
- Chiesa del Cappuccino Vecchio
- Antiche Grotte del Caricatore
- Casa Cava
- Casa Cisterna Sotterranea
- La Casa di Lucio
- Storica Casa Grotta di Vico Solitario
- Casa Grotta del Casalnuovo
- Grotte di Sant'Anna Castelfidardo
- Castello Sicano
- Catacombe Roma - The Catacombs of Rome
- Museo Cava Acque
- Parco archeologico di Cava d´Ispica
- Cavallo d´Ispica
- Cavea Arcari
- Caveoso Hotel
- Grotta di Chitaridd
- Museo civico "La Città Sotterranea"
- Cisterne Romane Amelia
- Cisternone
- Cisternone Romano
- Cunicoli di Claudio
- Cloaca Maxima
- Grotta di Cocceio
- Colosseum
- Museo della Civiltà Contadina
- Cripta duomo Città di Castello
- Cuma - Antro della Sibilla
- Damanhur Temple
- Grotta della Dragonara
- Museo Nazionale Etrusco
- Museo Faggiano
- Cisterne Romane Fermo
- Cisterna della Fontana del Calamo
- Cimitero delle Fontanelle
- Criptoportico Forense
- La Fornace di Barbablù
- Parco Archaeologico Forza
- Tomba Francois
- Frantoi Ipogei di Grottaglie
- Frantoio Ipogeo Granafei
- Frantoio Ipogeo Caffa
- Frantoio Ipogeo Sternatia
- La Grotta Dei Germogli
- Gravina Sotterranea
- Maria SS. Addolorata a Grottasanta
- Hotel Sassi Di Matera Diffuso
- Le Cisterne ed il Palombaro dell’Hotel Il Belvedere
- Kleine Berlin
- Labirinto di Roma
- Labirinto Casilino
- Labirinto di Porsenna
- Grotte del Lago Grande
- Grotta Lamalunga
- Latomie
- Grotta di Lourdes del Beato Claudio
- Lucca City Walls Basement
- Museo di Speleologia Luigi Fantini
- Lupercale
- Santuario della Madonna della Grotta di Bombile
- Santuario della Madonna della Grotta
- Madonna della Corona
- Madonna delle Virtù
- Chiesa Rupestre della Madonna della Croce
- Chiesa della Madonna del Parto
- Farmacia del Mago Greguro
- Ristorante Grotta Marinara
- Rifugio Antiaereo Martana
- Materasum Ipogeo
- Balma del Messere
- Mithraeum
- Mithraeum San Clemente
- Montepulciano La Città Sotterranea
- Monte Sant'Angelo sul Gargano
- Matera Olive Oil Museum
- Museo della Scultura Contemporanea Matera
- Museo del Sottosuolo Napoletano
- Napoli Sotterranea
- Narni Sotterranea
- Neronian Cryptoporticus
- Orvieto
- Grotte di Osimo
- Castello di Otranto
- Grotta Paglicci
- Mitreo di Palazzo Barberini
- Parco Urbano dei Palmenti
- Palombaro Lungo
- Cripta del Peccato Originale
- Minimetrò Perugia
- Ipogeo di Piazza Duomo
- Chiesetta di Piedigrotta
- Piscina Mirabilis
- Eremo di Poggio Conte
- Underground Basilica of Porta Maggiore
- Pozzo della Cava
- Qanat Gesuitico Alto
- Qanat Gesuitico Basso
- Qanat di Palermo
- La Raccolta delle Acque
- Re Tarquinio
- Rocca Paolina
- La Salata Necropoli Paleocristiana
- Eremo di San Cataldo
- L’Eremo di S. Corrado Fuori le Mura
- Chiesa di San Filippo Apostolo
- Grotta San Francesco
- Chiesa di San Gaetano alle Grotte
- Catacombe di San Gaudioso
- Catacombe di San Gennaro
- Catacombe di San Giovanni
- Eremo di San Leonardo
- San Lorenzo Maggiore
- Locanda di San Martino
- Chiesa Rupestre di S. Nicola
- Chiesa Rupestre di San Nicolò Inferiore
- San Pietro Barisano
- San Pietro Barisano Residence e Ristorante
- Chiese Rupestri di Santa Barbara
- Catacomba di Santa Caterina d’Alessandria
- Santa Caterina del Sasso
- Chiesa di Santa Lucia alle Malve
- Catacomba di Santa Lucia
- Santa Maria de Idris
- Catacomba di Santa Mustiola
- Santa Prisca Mithraeum
- Santuario di Santa Rosalia
- Sa Rocca
- Hotel Sassi
- Grotta di Seiano
- Sextantio Albergo Diffuso Le Grotte Della Civita
- Grotta della Sibilla di Marsala
- Bunker Soratte
- Castello di Sperlinga
- Taranto Sotterranea
- L'Osteria del Tempo Perso
- Mitreo delle Terme del Mitra
- Tiscali
- Todi Sotterranea
- Grotta delle Trabacche
- Museum Ladin Ursus ladinicus
- Sacre Grotte Vaticane
- Catacombe ebraiche di Venosa
- Criptoportico Romano Vicenza
- Vicus Caprarius
- Villa Torlonia
- Casa Rupestre Zovencedo
- Zum Turm
Jamaica1 entry
Japan33 entries
- Benten Cave
- Gankutsu Hotel
- Hanibe Caves
- Iwamuro Kannon
- Iwaya Kannon Cave
- Iwayayama Cave
- Izumizaki Cave Tomb
- Former Japanese Navy Underground Headquarters
- Kanmon Kaikyo Tunnel
- Kannon Dokutsu
- Maison Owl
- Mandarado Yagura Caves
- Matsushiro Underground Imperial Headquarters
- Mikurodo Cave
- Mukyudou
- Muro Iwa Cave
- Onigashima Cave
- Grand Central Oyster Bar
- Reigando Cave
- Saitobaru Burial Mounds
- Santica
- Seppun Tunnel
- Shelter No. 20
- Takkoku no Iwaya Temple
- Tamagawa Daishi
- Taya Caves
- Shutoken Gaikaku Hosuiro
- Tonkararin
- Umeda
- Ushibushi dōkutsu
- Yaechika
- Yoshimi Hyakuana
- Zeniarai Benzaiten Ugafuku Shrine
Jordan4 entries
Laos2 entries
Latvia4 entries
Lebanon7 entries
Lesotho1 entry
Lithuania1 entry
Luxembourg10 entries
Malaysia2 entries
Mali1 entry
Malta16 entries
Matrix1 entry
México4 entries
Middle-Earth1 entry
Moldova2 entries
Molvanîa2 entries
Montenegro2 entries
Morocco5 entries
Myanmar3 entries
Nepal3 entries
Netherlands25 entries
- A GoGo Valkenburg
- Historische Kelders Arnhem
- Derlon Hotel Museum Cellar
- DOMunder
- Duivelsgrot
- Fluweelengrot
- Forteiland
- Gemeentegrot
- Geulhemmergroeve
- Grottenaquarium
- Atlantikwall-Museum Hoek van Holland
- Jezuïetenberg
- Widerstandsnest 67 HL
- La Caverne
- Maastricht Kazematten
- Maastunnel
- Atlantikwall Museum Noordwijk
- Romeinse Katacomben
- Atlantikwall Museum Scheveningen
- Schuilen in Maastricht
- Sibbergroeve
- Grotten St. Pietersberg
- The Vault
- Nederlands Wijnmuseum Arnhem
- Bunkermuseum Zoutelande
New Zealand6 entries
Nicaragua1 entry
Nigeria2 entries
North Macedonia1 entry
Norway4 entries
Pakistan2 entries
Perú2 entries
Poland17 entries
- Anlage Mitte
- Projekt Arado
- Pętla Boryszyńska
- Podziemia Jarosławskie
- Podziemna Trasa Turystyczna 1000-Lecia Panstwa Polskiego w Klodzku
- Twierdza Klodzka
- Mauerwald
- Miedzyrzecki Rejon Umocniony
- Ekspozycja Przyrodnicza Ojców
- Podziemia Opatowskie w Opatowie
- Osowka Complex
- Muzeum Zimnej Wojny Podborsko 3001
- Rynek Podziemny
- Podziemna Trasa Turystyczna w Sandomierzu
- Podziemne Fabryki Walimia
- Włodarz Complex
- Wolfsschanze
Portugal8 entries
Romania7 entries
Russia20 entries
- Adjimushkay Quarries
- Naval Museum Complex Balaklava
- Chelter-Koba
- Chersonesos Cave Chruch
- ChufutKale
- Demeter's Crypt
- Divnogorsky Uspensky Cave-Monastery
- Muzey Drevnego Cheloveka
- Eski-Kermen
- Holkovsky Monastery
- MangupKale
- Melek-Chesmensky Kurgan
- Moscow Metro
- Pskov-Pechory Monastery
- Stalin's Bunker
- Syanovskie Quarry
- Bunker GO-42
- Tepe-Kermen
- Tsar's Mound
- Uspensky Cave Monastery
Serbia9 entries
Slovakia7 entries
Slovenia7 entries
South Africa3 entries
South Korea10 entries
Spain76 entries
- Abadía del Sacromonte
- Cuevas de Acusa Seca
- Cuevas Pedro Antonio de Alarcón
- Albarracín-Cella Roman Aqueduct
- Aljibe Andalusí
- Centro de Interpretación Hábitat Troglodita Almagruz
- Cueva de Anzo
- Cave Village Artenara
- Covetes dels Moros
- Bosc de Fades Bar
- Museo Termas Romanas de Campo Valdés
- Los Caños del Peral
- El Búnker del Capricho
- La Cueva Caprichosa
- Estación de Carpetana
- Estación de Chamberí
- El Chapandáz
- La Chumbera
- Circ romà
- Covetes del Colomer
- Cuatro Puertas
- La Mina de Daroca
- Bodega El Fabulista
- Santuario Virgen de la Esperanza
- Balma d'Esplugues
- Cova de les Finestres
- Venta El Gallo
- Cuevas del Gigante
- Guadix Cave Houses
- Cueva de Hércules
- Instituto Geológico y Minero Español
- La Cueva del tío Jesús
- LagOmar
- Las Cuevas
- Cuevas de la Mare de Deu
- Baños de Doña María de Padilla
- Zambra María la Canastera
- Cuevas de Menga y Viera
- Puig des Molins Nekropolis
- Cisternas Romanas de Monturque
- Museo Arqueológico
- Museo Canario
- Museu de Temàtica Espeleològica
- Ojo Guareña
- Estación de Pacífico
- Cementiri de Palma
- Cova des Pardals
- Parque de la Prehistoria
- El Puig de la Balma
- La Cueva de la Ramblera
- Cuevas de la Villa Requena
- Centro de Interpretación de Risco Caído
- Cueva de la Rocio
- Cuevas Romanas
- Cueva de Romeral
- Museo Cuevas del Sacromonte
- Restaurant Cova Sa Nacra
- Cueva de San Ignacio
- San Juan de la Peña
- Bodegas Carlos San Pedro Perez de Viñaspre
- Cisterna de San Roque
- Mazmorras de la Posada de la Santa Hermandad
- Museo Regional de Prehistoria y Arqueología
- Cava de Sant Blai
- Monastery of Sant Miquel del Fai
- Cueva del Santo Hermano Pedro
- Setenil de las Bodegas
- Restaurante Tagoror
- Cueva los Tarantos
- El Templo del Flamenco
- Las Termas Romanas
- Casas Cueva del Tio Tobas
- Subterráneos de Toledo
- Conjunto de Cuevas de Utiel
- Museo de la Valltorta
- Santuario de la Virgen de la Balma
Sri Lanka12 entries
Sweden3 entries
Switzerland44 entries
- Grottenburg Balm
- Brünig Indoor Schiess-Sport-Zentrum
- Musée Suisse de la Spéléologie
- Fort d'artillerie de Champex-Lac
- Fort du Cindey
- Festungsmuseum Crestawald
- Grotta dei Cristalli
- Fort de Dailly
- Eispalast Jungfraujoch
- Eispavillon Mittelallalin
- Höhlenburg Fracstein
- Festung Fürigen
- Gotthard Basistunnel
- Felslabor Grimsel
- Kraftwerk Grimsel 2
- Höhlenburg Grottenstein
- Festung Heldsberg
- Emmi Cheese Cave Kaltbach
- Gletschergrotte Klein Matterhorn
- Höhlenburg Kropfenstein
- La Claustra Hotel
- Grottes de Lamberta
- Pertouse de Leytro
- Fort de Litroz
- Lötschberg-Basistunnel
- Magdalena-Einsiedelei
- Festungsmuseum Magletsch
- Die Meyerschen Stollen
- Notre Dame du Scex
- Null Stern Hotel
- Le Fort de Pré-Giroud
- Höhlenburg Rappenstein
- Festungsmuseum Reuenthal
- Eisgrotte Rhonegletscher
- Domaines Rouvinez
- Fort du Scex
- Festungsmuseum Sperre Trin
- Gletschergrotte Titlis
- Tre Buchi
- Urnerloch
- Vereina Tunnel
- VersuchStollen Hagerbach
- Festung Vitznau
- Höhlenburg Wichenstein
Syria1 entry
Tanzania1 entry
Thailand12 entries
The Philippines3 entries
Tunisia4 entries
Turkey66 entries
- Ağırnas Yeraltı Şehri
- Akköy Evleri
- Alfina Hotel
- Altinocak Restaurant
- Anatolian Houses
- Ataman Hotel
- Aydıntepe Yeraltı Şehri
- Aynalı Mağara
- Azize Thecla Kutsal Alanı
- Beşikli Kaya Mezarları
- Binbirdirek Sarnıçı
- Cappadocia Cave Suites
- Cappadocia Palace
- Cappadocia Cave Resort & Spa
- Cehennemağzi Mağarası
- Çukurören Yeraltı Şehri
- Dedeli Konak
- Derinkuyu Yeraltı Şehri
- Elkep Evi Cave Houses
- Eshab-i Kehf - Grotto of Seven Sleepers
- Esbelli Evi
- Lycian Tombs at Fethiye
- Gamirasu Otel
- Gaziemir Yer Altı Şehri
- İnceğiz Mağaraları
- Kapilikaya Rock Tomb
- Katpatuka Cave Hotel
- Kaunos Kral Mezarları
- Kayadem Cave Hotel
- Kaymaklý Yeraltı Şehri
- Kelebek Hotel
- Eshab-ı Kehf Kulliye
- Les Maisons de Cappadoce
- Les Terrasses d'Uchisar
- Lice Ashâb-ı Kehf Mağarası
- Local Cave House
- Manazan Mağaraları
- Mazi Underground Settlement
- Monastery Cave Hotel
- Museum Hotel
- Rock-cut Tombs in Myra
- Nakilbent Sarnıçı
- Nevşehir Yeraltı Şehri
- Özkonak Yeralti Şehri
- Özlüce Yeraltı Şehri
- Paradise Pansiyon
- Tombs of the Kings of Pontus
- Sacred House
- Saratlı Kırkgöz Yeraltı Şehri
- Sarnıç
- Selçuklu Evi
- Şerefiye Sarnıçı
- Serinn
- Sivasa Gökçetoprak Yeraltı Şehri
- Star Cave Hotel
- Aziz Mercurius Yeraltı Şehri ve Kilisesi
- Sümela Manastırı
- Tatlarin Yeraltı Şehri
- Titus Tüneli
- Tünel
- Uçhisar Kalesi
- Ürgüp Evi Cave Hotel
- Vezir Cave Suites
- Yerebatan Sarnıçı - Cistern Basilica
- Yunak Evleri
- Zelve Monastery
Turkmenistan1 entry
Ukraine14 entries
United Arab Emirates6 entries
United States of America99 entries
- 10,000 Year Clock
- Arizona Mining and Mineral Museum
- Underground Atlanta
- Atomic Museum
- Bandelier
- Beckham Creek Cave Haven
- Beringer Vineyards
- Bird's Botanicals
- Bronson Caverns
- Brotherhood Winery
- Brunson Instrument Company
- Buffalo Bayou Park Cistern
- Caveman Bar-BQ & Steak House
- Underground Chattanooga
- Cincinnati Museum Center
- City Museum
- Clifton Cliff Jail
- Colossal Cave
- Cook Museum
- Crystal Shrine Grotto
- Dalton Gang Museum and Escape Tunnel
- Dougout Ranch
- Dupont Underground
- Ellinwood Underground Tunnels
- Eureka Springs Underground
- Faris Caves
- Federal Reserve Bank of New York Gold Vault
- Florida Museum of Natural History
- Forestiere Underground Gardens
- Franciscan Monastery
- Franklin Court Underground Museum
- Gorge Underground
- Great Bend Railroad Tunnel
- Greenbrier Bunker
- The Grove Park Inn
- Hartness House
- Haunted Cave
- Hole N" The Rock
- House on Fire
- Downtown Houston Tunnel System
- Ice Age Glacial Exhibit
- Indianapolis City Market Catacombs
- Injun Joe's Cave
- Interstate Caves
- Jordan Creek Underground Tours
- Cave of Kelpius
- Kokopelli's Cave
- Lockport Cave Raceway Tour
- LowLine
- Manchester Cave
- Manitou Cliff Dwellings
- Louisville Mega Cavern
- Mesa Verde NP
- Millie Mine Bat Cave
- Milton House
- Mines & Meadows ATV Riding Resort
- Minnesota Museum Of Mining
- Missouri Botanical Garden
- Montezuma Castle National Monument
- Moqui Sand Caves
- Nashoba Brook Stone Chamber
- Old City Hall Station
- Owensboro Area Museum of Science and History
- Oyster Bar
- Palmaz Vineyards
- Pendleton Underground Tours
- Portland Underground
- Puye Cliff Dwellings
- Queen City Underground
- Underground Racquets Ltd.
- Ra Paulette's Caves
- Rattlesnake Saloon
- The Grotto of the Redemption
- Robber's Cave
- Roden Crater
- Historic Old Sacramento
- Schiele Museum of Natural History
- Show Cave Night Gallery
- Arizona-Sonora Desert Museum
- Spa Terra
- Speakeasy 518
- Staglin Family Vineyard
- Subterranean Seattle
- SubTropolis
- Sybil's Cave
- The Underground Speakeasy and Distillery
- Thunder Head Underground Falls
- Titan Missile Museum
- New York Transit Museum
- Trough Creek
- Tulsa Cave House
- Tumbling Creek Cave
- Underground House
- Upton Cave
- Wabasha Street Caves
- Wattson and Wattson Jewelry Store
- Floyd Collins Museum
- Windber Coal Heritage Center
- Yucca Mountain Science Center
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