The walls had no windows, but vertical slit openings, bringing ventilation and providing at
the same time a diffused light into the inside. Apparently even the back wall had these
openings. The gabled roof was supported by two rows of pillars in the interior of the
chapel and two rows of pillars at the exterior, forming as thus a colonnade at each side of
the building, an architectural style from the Middle Ayutthaya Period. Also here is
Sukhothai art influence visible as some columns still bear capitals in the form of a stylized
lotus. As the gables and tiled roofs were wooden structures, it is clear that the chapel
must have undergone many restorations