From Paris: exit by A15 then RN14 towards Rouen to Magny en Vexin
Then follow the direction Beauvais, at the first village (Serans) turn left towards the hamlet of Petit Serans.
You have arrived
From the A16: exit at Beauvais sud then follow the direction of Mantes la Jolie to Serans
After the cemetery turn right towards the hamlet of Petit Serans
You have arrived