Yakushiji is a shrine located in Nara prefecture, built in the 7th century. The construction of the shrine was decided by emperor Tenmu in A.D. 680. Nara prefecture was a Japanese capital city in those days. Emperor Tenmu decided the construction of Yakushiji in praying for the empress' recovery from illness. The emperor and empress had just survived a war called Jinshin war that broke out in 672 and ended in the year. The war is regarded as the biggest war in ancient Japan.