Wat Wang Chai, or the Monastery of the Palace of Victory, was located on Ayutthaya's city island in the southwestern area of the city in the Pratu Chai Sub-district.

The site is only indicated on a 19th-century map by an unknown surveyor and does not feature on Phraya Boran Rachathanin's map drafted in 1926 CE, which shows empty space in that area.

The monastery stood between Khlong Chang Maha Chai (1) and Lao Road. There were large ponds to the south and west. Wat Ket (2) stood north-northwest, Wat Racha Monthian (defunct) northeast.

There are no traces anymore visible of the monastery above ground level. I presume this area was already cleared of temple ruins before Phraya Boran Rachathanin arrived in Ayutthaya.

Historical data about the monastery and its construction are unknown.

The site should have been approximately located in geographical coordinates: 14° 21' 6.78" N, 100° 33' 4.27" E.


(1) Khlong Chang Maha Chai, or the Great Victory Granary Canal, is a defunct waterway on Ayutthaya's city island in Pratu Chai Sub-district. The east-west running canal had its mouth at the old Lopburi River in front of Wat Thamma and linked up with Khlong Pak Tho. The canal passed the fortified city wall at the Chang Maha Chai Gate, a large water gate between Wat Suan Luang and Wat Sop Sawan. The canal has been filled up somewhere after the fall of Ayutthaya (1767 CE), and no traces of the waterway are left today.

(2) Defunct monastery, also known as Wat Jom Thong.