A Jesuit Church founded by the Portuguese during the reign of King Narai the Great, Wat San Paulo is situated approximately 3 kilometers east of town, off of Ramdaecho Road. The word San Paulo was probably dubbed by Thais especially when they pronounced Saint Paul or Saint Paulo in Thai style. Visible in the site are the remains of a brick wall and stucco tower, as well as an octagonal, 3-story, observatory.