Ayutthaya is the old capital of Thailand and is located 85 Km North of Bangkok. The place is surrounded by rivers and has a rich history. It was founded in 1351 by king Ramathibodi one. The city was captured by the Burmese in 1569 and robbed of many of it’s gold and artifacts. It was the capital of Thailand until it’s destruction by the Burmese in 1767.
The Ayutthaya kingdom was ruled by 35 different kings. The government started renovations of ruins in 1969. In 1976 it was declared a historical park. It became a UNESCO world heritage site in 1991.There are a lot of temple ruins compounds. It’s up to you how many days you will hang around there. If you take a tuktuk to bring you around from Wat to Wat and have a short walk around at each Wat, then one night at Ayutthaya can be enough.
It depends if you hang around 2 hour in one temple or 20 minutes. It also depend if you move around walking, by bicycle or by tuktuk.