Neak Pean means "winding giant snake". Such a small temple, in the middle of the water, stands like a pearl in the water against the blue sky and white clouds. Longpan Water Pool, built in the 12th century, is a Buddhist temple. There is an island in the middle of the big water pool. There is only a small stone pagoda temple built by imitating "Xumi Mountain" on the island. On the stone pagoda, two entangled giant snake kings (Naga) are carved. On the east side of the island, there is a white horse statue. Neak Poan's meaning "entangled giant snake" is named after the giant snake king statue on the island. During the reign of Jayavarman VII, he actively carried out various construction projects. Historians believed that during his 37 years in office, public works which were vital to people's livelihood were the first priority, including building reservoirs, paving roads and bridges, building 101 posts, 102 hospitals and so on. Among them, Preah Neak Pean was a temple sanatorium and a large hospital at that time. Even today, Cambodians still believe in the miracle medicine of snake temple. Although the water pool has been abandoned for a long time, Cambodians go to visit the snake temple and want to pick plants growing in the pool land and take them home for medicine bath. The big pool (known as the Holy Pool) is designed for bathing patients. Now the water has dried up.