The Grotte de Saint-Cézaire near Grasse is one of the best caves in Provence to visit in 2025. A 40 minute guided tour takes you 40 metres below ground through spectacular limestone galleries filled with stalactites, stalagmites, and draperies formed over six million years. Highlights include the guide’s sound demo on the musical stalactites and the glowing fluorescent waterfall at the end of the route. With a constant 15°C temperature, the cave is ideal for cooling off in summer or as a ...