Ayutthaya, a World Heritage City and historic capital of Thailand. Visit Wat Mahatad, the royal monastery, served as the residence of supreme monk. Wat Phrasrisanphet, the largest and most important temple. Its was used as a residential palace. and Wihan Phramongkhon Bophit, the large bronze Buddha image was originally enshrined in the open area outside the grand palace and later covered by a building called Wihan Afternoon By cruise: