Phanom Wan Stone Sanctuary was first built in the 10th Century. It consists of a pagoda built in brick to serve as a place for the Khmer Hindu religion. Later a stone sanctuary was built on top as a shrine built in Baphuon architectural design, 11th/12th Century. The layout is the same as the Phimai Sandstone Sanctuary with both red and white types of sandstone used in construction. This sanctuary is an important source of learning as it was either incomplete or heavily restored or modified over time.