Whether or not you’re staying in Vichy, the city’s many examples of architectural exuberance from the time when spa treatments were all the rage are a must. These range from the neo-Baroque (palais des Parcs, 15 boulevard de Russie; the Aletti Palace, rue Aletti; and the hôtel du Parc, 21-23 rue du Parc), to the neo-Louis XIII (hôtel des Ambassadeurs, rue du Casino), and Art Deco (Ermitage du Pont-Neuf, square Albert I^er).