Built from 1590 by lords from Vexin, the Louis XIII-style castle of Jussy-Champagne now belongs to the Ponton d'Amécourt family who restored and modernized it. Listed as historical monuments since 1946, the castle and its park can be visited from May 1 to September 30 from 10 a.m. to 6 p.m. for 5 €. More information on chateaudejussy.com