Wat Phra Si Rattana Mahathat

Wat Phra Si Rattana Mahathat is an ancient Buddhist temple complex in Tambon Rua Yai, Mueang Suphan Buri District, Suphan Buri Province, Thailand. Centered on a tall Khmer-influenced prang, the site contains ruins from Dvaravati, Lopburi and Ayutthaya periods. Notable for its historic architecture, stucco details, and archaeological remains, it is a protected ancient monument and a significant cultural landmark in Suphan Buri town.

Visitors can expect a historic temple compound with a central prang, ruined vihara and chedi, ancient stucco carvings and Buddha images, and open courtyard areas. The site is largely archaeological with restored structures, information boards, and shaded grounds within Suphan Buri town. It offers quiet sightseeing, photography, and observation of Ayutthaya and Lopburi architectural styles.