Provence-Alpes-Côte d’Azur is even for French-speaking people too complicated, so it is commonly shortened to PACA. Since 2017 it is also called Région Sud, probably as the reform of the regions introduced names like Grand Est and Nord. However, the other regions actually changed their extent, this region was just renamed. And it is actually located in the southeast at the border to Italy, and it is not the southernmost region.
It covers numerous landscapes, from the Mediterranean coast to the highest Alps, and even the estuary of the Rhone river, the Camargue. Many karst areas with spectacular caves can be found too. The Vaucluse is the namesake of Vauclusian Springs, and there are other important sights. Due to the mostly mountainous, or at least hilly, landscape, the central part is not very densely populated and there are few roads, mostly along the valleys. The listed sites are concentrated on the coast and the Rhone valley.
Mines de l’Argentière
Grottes des Audides
Village troglodytique de Barry
La Baume Bonne
Grotte de Beaume Obscure
Mines de Bruoux
Grottes de Calès
Musée de la Mine de Cap Garonne
Cathedrale d’Images
Colorado Provençal
Grotte Cosquer
Les mines d’argent du Fournel
Musée des Gueules Rouges du Var et de la Bauxite
Sources de l’Huveaune
La Grotte de Glace La Grave La Meije
Grotte du Lazaret
Le Prince Noir
La Crypte Archéologique de Nice
Grotte de l’Observatoire
Pôle Historique Minier
Cave du Prieuré
Fontaine pétrifiante de Réotier
Grotte des Résistants
Grotte de Saint-Cézaire
Musée de la mémoire ouvrière, Mines et Mineurs de Provence
L’Abbaye troglodytique de Saint-Roman
Ouvrage Sainte-Agnès
Grotte de Sainte-Baume
Carrière Saint-Just
Grottes de Saint-Maurin
Grotte Saint-Vincent
Grotte de Thouzon
Grotte du Trou de l’Argent
Fontaine de Vaucluse
Gorges du Verdon
Villecroze Caves