Key Monastery, also known as Kye Gompa, (spelled Ki, key, Kye, or Kee) of the Gelugpa sect. is a Tibetan Buddhist Monastery, well known for being one of the largest monasteries in Spiti Valley, situated on a picturesque hilltop at an altitude of 4,166 m (13,668 ft) above sea level, close to the River Spiti, in Spiti Tehsil of Lahaul and Spiti district, in the state of Himachal Pradesh.