Wat Tha Sai or the "Monastery of the Sand Landing" was located off the city island in the northwestern area of Ayutthaya in Wat Tum sub-district. It was situated in the immediate vicinity of Wat Chang Yai, east of road No 347.
In situ is a large brick mound with remains of a wall and a chedi. Some brick work can be seen being enveloped in a tree. The all site is grown over by vegetation, while some parts are inundated.
Its historical background and period of construction are unknown.
Text & photographs by Tricky Vandenberg - May 2009