The original structure is believed to be similar with the Great Stupa in Sanchi, India, with a simple hemispherical brick structure built over the relics of the Buddha with chatra, a parasol-like structure symbolising high rank, on the top of stupa. The stupa is first mentioned in Buddhist scriptures of the year 675, however archaeological findings date back to the 4th century. Modern Historians believe that the stupa was one of the principal stupas of ancient Nakhon Pathom, the largest settlement of Dvaravati culture together with the nearby Phra Pathonnachedi during the 6th to the 8th centuries.