Wat Jan Prathet is an active monastery situated off the city island in the northwestern area of Ayutthaya, in the Ban Mai Sub-district, Mu 6. The temple is located on the east bank of the Chao Phraya River in the vicinity of Wat Bamrung Tham and the north bank of a canal with its mouth at the Chao Phraya River.
In situ is a classic monastic complex build. A beautifully decorated entry gate leads into the temple grounds. The monastic buildings are all aligned in a northeast-southwest alignment.
The ordination hall facing the canal has two elevated porches with two entries in the front and the back. The hall is 22 metres long by 8 metres wide. The ubosot houses a 20-inch copper Buddha image in the Bhumisparsha mudra gesture dating back to the Ayutthaya period. The roof is three-tiered, with five rectangular windows on the longest sides. The hall is surrounded by a wall of 24 metres by 8 metres, separating the monastic world from the secular world.
The Sala Kan Parian, or sermon hall, where monks can instruct laypeople in the Buddhist doctrine, is 21 metres long and 13 metres wide.