Château de Grosbois in Boissy-Saint-Léger is a Renaissance castle built between the late 16th and early 17th centuries, whose origins trace to 1190 when Philip II granted abbey lands that were later developed into an elegant château by Nicolas Harlay de Sancy around 1640. This 412-hectare estate encompasses woods, ponds, and meadows, creating an exceptional natural setting that has been repurposed since 1805 as a premier equestrian training center for trotting horses located near the Paris-Vincennes racecourse. The château now hosts a museum dedicated to trotting culture while maintaining its function as a working equestrian facility capable of accommodating up to 1500 horses, blending historic preservation with contemporary sporting heritage.
