Former retention basin, belonging to the networks of ponds and ditches built by Louis XIV to supply the large waters of the Palace of Versailles, this pond is today an ornithological reserve which shelters many species of migratory birds.
Another excellent local surprise, this pond (artificial, but dating from Vauban) was part of the system of channels and aqueduct which directed the waters from the Saclay plateau to the fountains of Versailles...
Near Maincourt-sur-Yvette, this wood has beautiful rock formations climbing up the first slopes of the Chevreuse valley, just a few meters from the river.