Ayutthaya Historical Park (Thai: อุทยานประวัติศาสตร์พระนครศรีอยุธยา (Pronunciation)) Well renowned as the old capital city with the longest history of Thailand, Phra Nakhon Si Ayutthaya lasted for 417 years through the reign of 33 kings. Through these golden ages, the ancestors had left behind a wide array of priceless heritage, ranging from architecture, historical sites, archeological finds, art objects to cultural identity. Stretching across the 3,000-rai plot of land, Fine Arts Department begun the conservation for archeological sites of Phra Nakhon Si Ayutthaya under the Ayutthaya Historical Park Project in 1982. Later in 1991, the Ayutthaya Historical Park was declared as a UNESCO World Heritage Site, along with the Sukhothai Historical Park, Si Satchanalai Historical Park and Kamphaeng Phet Historical Park, by the United Nations Educational, Scientific and Cultural Organization (UNESCO).
Ayutthaya Historical Park consists of 425 unearthed archaeological sites, which are located within and outside the city wall, with main highlights as follows: