Of all the Loire’s many tributaries, the slow-moving Cher and Indre are closest to the heart of the region, watering a host of châteaux as they flow northwest from this little-visited region to the south. Twenty kilometres southeast of Tours, spanning the Cher, the Château de Chenonceau is perhaps the quintessential Loire château for its architecture, site, contents and atmosphere. Further upstream, Montrichard and St-Aignan make quieter diversions from the endless stream of castle tours. To the south is the Château de Valençay, with its exquisite Empire interiors. A short drive west of here, on the River Indre itself, is the lovely town of Loches, which possesses the most magnificent medieval citadelle in the region.