Wat Phra Yuen is a Theravāda temple located in Wiang Yong, on the eastern bank of the Kuang River in Lamphun. The monastery occupies about 29 rai of land and is recognized as one of the four corner temples of the ancient city of Hariphunchai. It traces its beginnings to the reign of Queen Chamadevi, the first ruler of the kingdom, who is believed to have founded the monastery in the seventh century. At that time, it was known as Araññikarama, reflecting its early role as a quiet monastic retreat.