The park includes a high density of medium to small trees with primarily large oaks (some of which will reach maturity in a few years). Those multi-century old oaks stand all across the park. According to experts, the oldest oak is more than 300 years old. The park has been designed over the centuries to include many tree species: oaks, beeches (including the red beech alley), elms, hazel and chestnut trees. To the north of the château is a large orchard with various fruit trees and an organic vegetable garden that is maintained all year. Chicken coops and other small farm animals (geese, etc.) are also in this garden. The château's icebox, where ice brought by horses was stored under the oak trees’ coolness, can be found close to the east portal. This icebox has long been used by the château's staff. A legend says that the nearby château called the Château de Saint Jean de Beauregard and a monastery (now disappeared) located in the Arpajon forest were linked through a network of tunnels. Those tunnels were built to allow the owners to escape in the event of danger. Traces of those tunnels are clearly visible in the park, but no confirmation has been given to the tunnel's destination or length today. Surrounding the village, the château and its park (mostly centered to the northern part of the château), the estate includes 65 hectares (160 acres) of farming fields and 105 hectares (260 acres) of forest. The Château de Janvry is located from the center of Paris. Today, the Château de Janvry often appears in films, magazines and photo shoots. The castle serves as a set for the Fly High music video of the kpop group Dreamcatcher, released July 27, 2017. It is rented for private parties and hunting of both small game (pheasants, partridges and duck) and big game (roe deer, deer, boar) hunts.