The long, elongated, Khmer-style Prang or tower, and four minor towers symbolize the terrestrial representation of the thirty-three heavens. The different layers, or heavens, are supported by Kinnaree or half-humans, and frightening Yaksas, or demon guards. Pavilions on the first platform contain priceless statues of the Buddha at the most important stages of his life. On the second terrace four statues of the Hindu god Indra or Erawan, his thirty-three headed elephant, stand guard. The main Buddha image inside the Bot is believed to have been designed by King Rama II himself, but the murals date from the reign of King Rama V.