Southern Vihara or Phra Panchawaki Vihara (Thai: วิหารปัญจวัคคีย์) is a single storey reinforced concrete building with traditional Thai temple glazed tiles roof built by Mongkut on 18 December 1861. Inside has two rooms, inner room and outer room. The inner room has an image of Buddha with Mucalinda. The outer room housing the principal Buddha image of the Southern Vihara with statues of his first five disciples. The inner room has mural paintings depicting Phra Pathommachedi throughout the history as well as Buddhist sacred sites in India. On the lower terrace in front of Southern Vihara has a large Dvaravati stone buddha named Phra Phuttha Noraseth or Phra Sila Khao (Thai: พระพุทธนรเชษฐ์ หรือ พระศิลาขาว). Originally enshrined in the abandoned Na Phra Meru Temple, with unknown reason the image has been divided and kept in various places. In 1967 Department of Fine Arts successfully assembled all the fragments of the image and gave to the temple of Phra Pathommachedi.