 The temple was founded by Saichō (767 – 822), and remains both the headquarters of the Tendai sect and part of the UNESCO World Heritage Site "Historic Monuments of Ancient Kyoto (Kyoto, Uji and Otsu Cities)".Mii-dera, formally known as Onjō-ji, is the head temple of the Tendai Jimon sect.Mii-dera, which sits near the central area of the city, is one of the four largest temples in Japan.