The ancient city of Ayutthaya , or Phra Nakhon Si Ayutthaya , The Thai capital for 417 years, is one of Thailand 's major tourist attractions. Many ancient ruins and art works can be seen in a city that was founded in 1350 by King U - Thong when the Thais were forced southwards by northern neighbours. During the period of Ayutthaya being the Thai capital, 33 kings of different dynasties ruled the kingdom until it was sacked by the Burmese in 1767.

        Ayutthaya is 76 kilometres north of Bangkok and boasts numerous magnificent ruins. Such ruins indicate that Ayutthaya was one of Indo - China 's most prosperous cities. Phra Nakhon Si Ayutthaya Historical Park , a vast stretch of historical site in the heart of Ayutthaya city, has been included in UNESCO's list of world heritage since 13 December, 1991 .

         Ayutthaya covers 2,556.6 square kilometres, and is administratively divided into 16 districts (Amphoes). It is conveniently accessible due to good roads and a short distance from Bangkok .

Reference : Tourism Authority of Thailand