Wat Banan is the best-preserved of the Khmer temples in Battambang Province. The distinctive five towers of the temple are similar to the much larger and more famous temple of Angkor Wat. At the base of the mountain, is a step laterite staircase flanked by nagas.
The 11th century temple was built by King Udayadityavarman II son of the king Suryavarman I and despite some looting it is in a considerably better state of repair than Wat Ek Phnom. It was built to give thanks, ask for help, and pray to God. In this era, they have a strong belief in the god. Especially in Hindu.
Map : https://goo.gl/maps/TZdMhhzqxnWDPNLt9