Plant lovers and horticulturists unite: The Exotic Garden, which lies along La Condamine's cliffs, is "fantastic," according to recent visitors. This garden has been open for more than 75 years and has cultivated an extensive collection of rare plants and cacti. You'll see more than 1,000 plant species – and even a deep underground cave – but in order to tour its stalagmites and stalactites, you'll need to follow a guide.

Open daily from 9 a.m. to 6 or 7 p.m., depending on the season, tickets cost 7.20 euros (or about $8.50). For more information, visit the website.