The ordination hall or ubosot lies east and in the front of the large chedi. The hall
measures 16 m by 44 m and has been re-roofed to preserve it from further damage. If I
recall well it was before partial surrounded by a moat (which now has been filled). Phra
Phuttha Chaiya Mongkhon in the ordination hall is one of the most sacred Buddha
images in Ayutthaya.