Château de Biron
Stop in Biron to see its massive hilltop castle, the highlights of which include a keep, square tower, and chapel, dating from the Renaissance, and monumental staircases. In addition to the period apartments and the kitchen, with its huge stone-slab floor, there's a gigantic dungeon, complete with a collection of scarifying torture instruments. The classical buildings were completed in 1760. The Gontaut-Biron family—whose ancestors invented great typefaces centuries ago—has lived here for 14 generations. The château has been undergoing renovations on a room-by-room basis since 2013, but these interfere only minimally with the viewing. It's well worth renting an audio guide (€3) to get a detailed history, plus specifics about the architecture and decor.
