Phra Prathon Chedi is one of the oldest stupas in Thailand with the height of 50 metres (164 ft). The stupa is located in the Wat Phra Prathon Chedi Wora Viharn, a temple in Nakhon Pathom, Thailand, 3 km east of Phra Pathommachedi.
Buddhist temples in Thailand are characterized by tall golden stupas, and the Buddhist architecture of Thailand is similar to that in other Southeast Asian countries, particularly Cambodia and Laos, with which Thailand shares cultural and historical heritage.
During Ram Khamhaeng's reign, stupas were built, reflecting the Sri Lankan influence. One of these is Wat Chang Lom.
Thai travelers to Sri Lanka also brought back the root of a Bodhi tree, which began the Thai tradition of .