Ayutthaya (pop. 76,000) was the capital city of the Thai kingdom of Ayutthaya and one of the world's largest and most sophisticated cities until it was sacked by the Burmese in 1756.
Much of the ancient city's architecture, art, and literature was destroyed in 1767 when Ayutthaya was sacked by Hsinbyushin of the Alaungpaya dynasty, but several temples (=Wat) still stand. The modern town of Ayutthaya is set among the ruins of the ancient city, and its treasures are preserved in the National Museum. Ayutthaya was designated a UNESCO World Heritage site in 1991.
Originally built in 1448 as the king's private chapel, Wat PhraSri Sanphet is just south of the raised Grand Palace area.
The major attraction of the park is Erawan Falls, a waterfall named after the erawan, the three-headed white elephant of Hindu mythology. The seven-tiered falls are said to resemble the erawan. There were supposed to be three upper segments coming down over a rounded limestone precipice that would've made the falls appear like three elephant trunks. Hence the three-trunk-elephant-like appearance resembling the Hindu God by the name of Erawan.
It takes about 3.5 hours to do the entire round trip to visit all seven of the Erawan Waterfalls.