Wat Mahathat is the largest and most impressive temple among the ancient monuments within the city wall of Sukhothai. Its main chedi (stupa), vihara (assembly hall), mandapa, ordination hall (uposatha), and approximately 200 subordinate chedis, as well as some fine Buddha images are overwhelming. These stupa represent various architectural influences. Apart from the lotus bud shape, which is the definitive style of Sukhothai, there are also chedis in the earlier styles of Hariphunchai, Lanna and Sri Langka. Two impressive statues of the 12-metre-tall standing Buddha, Phra Attharot, enshrined in the mandapa on both sides of the principle chedi.