Wat Nang Sao is located in Tambon Tha Mai. Take Highway No. 35 (Thon Buri-Pak Tho) to Highway No. 3091 for approximately 5 kilometres and turn left into Soi Wat Nang Sao 2 for 1 kilometre.
According to legend, Sakhon Buri is a beach town in the south of Ayutthaya city. During a war in then Burma, a group of Thai people immigrated along the Tha Chin River. The elderly and women hid in the ancient Phra Ubosot. Later, the Thais helped one another in fighting with the Burmese troops and gained victory. The immigrants then, settled in the area. Among them, 2 sisters who once had taken refuge in the Phra Ubosot, had an idea to renovate it. However, the elder one realized that the temple was too damaged and thus, built a new one instead. Therefore, the younger sister would like to do as promised that if they survived, they would have the temple renovated.
Therefore, she finished the renovation and called it “Wat Phrommachari”. Later, it was called “Wat Nong Sao”. At present, it is eroded into “Wat Nang Sao”. The important ancient monument of the temple is a brick ordination hall on a curved base similar to a junk with one entrance which is called “Bot Maha Ut”. It has the ancient style of a terracotta tiled roof, whose beams were made of logs and twin sandstone boundary markers. In the area, in front of the temple next to the Tha Chin River is located a fish sanctuary, full of striped catfish. It is well-known among tourists who usually come to visit and feed the fish.