A temple from the Angkorian era, Phnom Chisor is set upon a solitary hill in Takeo Province, offering superb views of the countryside. The main temple stands on the eastern side of the hilltop. Constructed of laterite and brick with carved sandstone lintels, the complex is surrounded by the partially ruined walls of a 2.5m-wide gallery with windows. Inscriptions found here date from the 11th century, when this site was known as Suryagiri. On the plain to the west of Phnom Chisor are the sanctuaries of Sen Thmol (just below Phnom Chisor), Sen Ravang and the former sacred pond of Tonlé Om. All three of these features form a straight line from Phnom Chisor in the direction of Angkor. During rituals held here 900 years ago, the king, his Brahmans and their entourage would climb a monumental 400 steps to Suryagiri from this direction.