Prang Ruesi is a Khmer tower located at Wat Pa Sra Khwae temple, approximately 2 kilometers from Si Thep town to the north. This group of monuments consisted of a main Khmer tower (Prang Ruesi), a minor tower (which has been completely destroyed) and other buildings.
The main tower, is a typical product of Khmer architecture, built with bricks and laterite. It may have been constructed in the same period as Prang Si Thep and Prang Song Phi Nong.
This sanctuary has, however, been subject to modification on occasions throughout its history. According to archaeological evidence, this monument was constructed around the 11th century A.D.