From Paris : Pte de la Chapelle to Lille, exit the motorway A86 Nanterre/La Défense. Follow to the motorway A15 Cergy-Pontoise (1) exit number 9 (2) and first on the right. Follow to Bd F.Mitterrand after on third light traffic on the left, continue 100 m and on the left. From Rouen : N14 after the motorway A15 exit number 9 (2), on round about to Pontoise. RER ligne A (3) to Cergy-le-Haut, exit Cergy-Préfecture.Park close. Railway to Pontoise at 2 km and aeroports to Cergy-Pontoise at 12 km, to Roissy CDG at 50 km.