The Bayon's most distinctive feature is the multitude of serene and massive stone faces on the many towers which jut out from the upper terrace and cluster around its central peak. Khmer Smile refers to this mystic grin of King Jayavarman VII who ruled Cambodia in the 12th Century. During his reign, the Khmers built the famous Bayon Temple in Angkor Thom. It is generally believed this portrait is a combinatiion of Boddhisattva Avalokitesvara and King Jayavarman VII himself. To show his omnipresence and omnipotence, his face was carved in facets of all the towers in the Bayon Temple such that his subjects can see his compassionate look and enlightened smile.