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 to the north, Wat Ayothya to the east, Wat Pradu (defunct) to the south, and the railway to the west. In situ is a brick mound covered in 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 context.