The Vichayen House was built at the royal command of King Narai the Great. It initially served as a residence of Chevalier de Chaumont, the first French ambassador to Thailand during the reign of King Louis XIV. Later on, it was occupied by the Greek, Constantine Phaulkon, who later became King Narai's advisor and was granted the position of royal minister - Chao Phraya Vichayen. Located just 300 meters from Prang Khaek, the compound has many interesting visible ruins including the Roman Catholic Chapel, a hall of residence for ambassador and mission members, brick water tanks and fountains.

Open Wed-Sun: 07.00-17.00 hrs (closed on Mon and Tue)

Admission fee is 50 Baht.