Phra That Si Song Rak (Thai: พระธาตุศรีสองรัก, literally the Stupa in Honour of Two Loves; also Pha That Si Song Hak in Lao, and varied other spellings) is a Buddhist stupa built in c. 1560 by Laotian and Thai kings. It is located on the Man River in Dan Sai district, Loei province of modern-day Thailand, 20 miles (32 km) from the modern Thailand-Laos border. The name means "Stupa of Love from the Two Nations".