It may well have been at Courances where Le Nôtre conceived of his French garden. It was originally attributed to André Le Nôtre, although it was the landscape designers Henri and Achille Duchêne who, in the early twentieth century, fully developed the classical design of Courances. For more than 500 years, the successive owners fashioned the soul of the property, while preserving its integrity. Jean-Louis de Ganay, the current owner, decided to simplify the geometric lines of the park and to allow nature its full expression, making Courances a decidedly contemporary garden.