Ku Santarat is on the way to Na Dun. To get there, take Highway No. 2040 past Kae Dam and Wapi Pathum, then turn right onto Road No. 2045 and drive for 1 kilometre. The site is a stone sanctuary built in the reign of King Jayavoraman VII. This Bayon-style building was completed during 1157-1207. This square laterite structure is similar to Ku Maha That. The front doorway has a remarkably beautiful lintel.