Phra That Phanom is located 51 km from Nakhon Phanom town centre. It was built in the 16th century by the Laotian King Setthathirath of Lan Xang. It is used to house the Buddha’s breast bones. The architecture of the Phra That is found in the architecture of Khmer castles. It is 53.60 metres high and 12.33 metres wide. The site has been restored several times by the Fine Arts Department. The ground floor is a museum housing many ancient items. An annual celebration is held from the 10th day of the waxing moon to the 1st day of the waning moon of the 3rd lunar month