Phra Pathommachedi at Nakhon Pathom Provice in Thailand

Phra Pathommachedi or Phra Pathom Chedi is a Buddhist stupa in Thailand. The stupa is located in the Wat Phra Pathommachedi Ratcha Wora Maha Wihan , a temple in the town center of Nakhon Pathom, Nakhon Pathom Province, Thailand. Phra Pathommachedi is one of the tallest stupas in the world.[note The top of its spire reaches 120.45 meters, with the base circumference of 235.50 meters.

The name Phra Pathommachedi means the first holy stupa, given by king Mongkut. Modern Historians believe that the stupa was one of the principal stupas of ancient Nakhon Pathom, the largest city of the Mon kingdom of Dvaravati in Nakhon Pathom area together with the nearby Phra Prathon Chedi during the 6th to the 8th centuries.