On the Paris-Sens-Dijon train route, TONNERRE is a useful, though not that inspiring, starting point for exploring this corner of the region. A run-down little town that has clearly not enjoyed the same prosperity as its neighbour Chablis, it has as its principal sight the vast and well-conserved medieval hospital, the Hôtel-Dieu (hourly guided tours: June-Sept daily except Tues 10am-noon & 1-7pm; April, May & Oct Sat, Sun & hols only 1-6pm; 23F... [More]