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. The town hall and 16th-century "Hôtel-Dieu" (former hospital) are also well worth the detour. To leave Nemours, you’ll skirt the town centre by first returning to the canal lock. Cross the lock to reach Rue de l’Ecluse on the right bank, then follow Rue du Port au Sablé. Cross the bridge at Rue de Paris to change banks and reach Quai du Canal on the left bank. Continue first along Cours Balzac, then Quai des Mariniers.