Preah Khan, which means 'sacred sword’ is a temple that has been left in a largely unreconstructed condition. It is not as visually spectacular as Ta Prohm, but it is a big, explorable temple multifaceted, with large trees, moss, and dark stone corridors. It also has a mammon of carvings, and provides many photo opportunities.There are networks of smaller passages, which open onto arcades, courtyards, and rooms of all sizes. Initially built as a Buddhist monastery and school, it had over 1000 monks in house. It also was the residence of King Jayavarman VII while the majestic city of Angkor Thom was being built.