Wat Mahathat, Phra Nakhon Si Ayutthaya Province It is one of the temples in the Ayutthaya Historical Park. Wat Mahathat is an important temple in the Ayutthaya period. because it is a temple that enshrines the Buddha's relics in the heart of Phra Nakhon and is the residence of the Supreme Patriarch of the Kamwasi department as well