The walls of the galleries surrounding Wat Phra Kaeo are decorated with murals depicting the story of the Ramakien, the Thai version of the Hindu epic, Ramayana. The murals are painted during the reign of King Rama I and have been restored many times since. The 4984 verses telling the story of the Ramakien are inscribed in marble slabs embedded on the four sides of each pillar supporting the gallery roof.