Inside each prang, sacred figures were originally enshrined according to Mahayana Buddhist beliefs: the central prang housed a "Nak Prok (Buddha sheltered by a Naga)", while the north and south prangs held Avalokiteshvara and Prajnaparamita. Today, the central prang still houses an unfinished sandstone "Nak Prok Buddha", providing a rare look into ancient stone carving techniques that occurred alongside the monument's construction. In the front vihara (added during the reign of King Narai), there is a beautiful and relatively intact sandstone "Buddha in the Subduing Mara posture", reflecting mid-Ayutthaya period art. The Buddha images found here are typically crafted from sandstone, a popular material in Lopburi sculpture that conveys a sense of solemnity and power. Tourists usually pay their respects and view these "Buddha statues" through iron bars, which were installed to protect the ancient artifacts from the curiosity and potential damage of the local monkeys.