Wat Klong or "The Monastery of the (Tele)scope" was located on the city island outside the Historical Park in the north-eastern area at Pratu Chai sub-district.
The monastery was situated on the south bank of a canal linking the (now defunct) Khlong Pratu Khao Pluak with Khlong Nai Kai, at present called Khlong Makham Riang. It stood central between the two main canals.
In the north lie along the (old) Lopburi River, presently called Khlong Muang, Wat Tha Sai while on its south-west once stood Wat Jao Ta.
There are no traces anymore visible of the monastery above ground level.
Historical data about the monastery and its construction are unknown.