At the lock, follow Rue Thiers to visit the town centre. Be sure to explore the castle-museum, Nemours’ emblematic 12th-century edifice grandly situated in the old medieval district. Also well worth the detour: the town hall and old “Hôtel-Dieu” (former hospital) dating from the 16th century, as well as the Île-de-France Museum of Prehistory located on 48 Avenue Etienne Dailly!