Wat Sa Si, Sukhothai Historical Park.The temple is attractive for its location. Standing in the middle of a reservoir, the ruins are reached via a bridge. Important buildings include a bell-shaped chedi, serving as historical evidence of the prevalence of Singhalese Buddhism in Sukhothai. The ordination hall in the middle of the reservoir points to a Buddhist concept of demarcating an area where monks perform religious functions by enclosing the holy precincts with water as a symbol of purity.