The Phra prathaan, i.e. the principal Buddha image, at Wat Mahathat Wachiramongkhon  (previously known as Wat Bang Thong), is housed in a hall underneath a pagoda built in the style of the Maha Bodhi Pagoda at in Bodh Gaya (fig.).

The hall is richly decorated with murals of scenes and characters from both Buddhist and Hindu religion and mythology, as well as with bas-reliefs and statues of mythical and religious figures, such as thevada.

Amongst others, there is a niche decorated with mythical snakes called naga (fig.) and sheltering a crowned Buddha.