Wat Thammakhosok or called “Wat Rong Kho” by villagers was built in the early Rattanakosin period. It is on Si Uthai Road, Tambon Uthai Mai in the municipality. It was used to hold rites by Uthai Thani government officials to pledge allegiance to the king as well as an execution site. The most interesting places in the temple are the chapel and the main Buddha image hall. The chapel is of the Rattanakosin period. A tiled roof covers the building. The Buddha image here is highly sacred. There are beautiful murals inside, the works of late Ayutthaya artists. The main hall is a larger building that is higher than the chapel. A pedestal inside has around 20 Buddha images on it. The outer windowpanes have plaster drawings of the epic Ramayana as frames. The doors have wooden floral patterns painted in bright red.