Château du Piple in Boissy-Saint-Léger features distinctive architectural heritage spanning centuries, with earliest structures dating to around 1280 when the Abbey of Saint-Maur commissioned a manor with moats, walls, chapel, and cellar. A castle was reconstructed in 1725 and further rebuilt around 1850 by architect Phidias Vestier following Swiss banker Jean-Conrad Hottinguer's purchase. The Hottinguer reconstruction introduced landscaping by renowned architect René-Edouard André and cabinetwork by master cabinetmaker Fourdinois. Set within a 3.5-hectare park surrounded by forest, the château displays imposing façades and well-preserved ground-floor reception rooms. The façades, roofing, decorative elements, and the Saint-Babolien fountain are registered as historical monuments. Now converted into a private co-ownership, the former farm, orangery, and castle have been sensitively rehabilitated into residences.
