Wat Wihan Khao, or the Monastery of the White Prayer Hall, is off the city island, in the northeastern area of Ayutthaya, in the Hantra Sub-district. Wat Khok (defunct) stood north, Wat Ayothya east, Wat Pradu (defunct) south and the railway west).
In situ is a brick mound covered with vegetation and the remnants of a bell-shaped chedi. Its style is associated with the middle Ayutthaya period (1488-1629 CE), although there are no records of its original construction or historical background.
The chedi of Wat Wihan Khao stands in line with the large chedi of Wat Ayothya. The site has been a victim of treasure farming in earlier times, as seen from the many holes dug into this chedi by looters. One hole is burrowed all the way through so that you can see the sky on the other side. Other holes have resulted in large cracks. Given that seasonal flooding is common in this area, the temple’s stability is questioned. There are traces of an east-oriented unexcavated monastic structure, with shattered pieces of Buddha images.
The site is in geographical coordinates: 14° 22' 4.78" N, 100° 35' 11.06" E.
