Inside are murals painted in the reign of King Chulalongkorn, depicting royal festivals of the twelve months. The main Buddha image is a replica of the Phra Phuttha Sihing, underneath it are interred the ashes of King Mongkut. On the wall opposite the Buddha image is a mural depicting King Mongkut watching the solar eclipse at Wakor village, Prachuap Khiri Khan Province on 18 August 1868.