Phimeanakas is a three level, step pyramid with a height of 131 feet. Also called Prasat Phimean Akas, it is located within the Royal Palace grounds at Angkor Thom. This Hindu, “celestial temple” was commissioned by Rajendravarman II during his reign from 944 until 968. After the structure was finished by Suryavarman I, he used it as the epicenter of his Khmer Empire until his death in 1050. According to legend, each night a nine-headed nāga appeared in the central tower as a spirit princess for the pleasure of the king.