Phayathai Palace is an old palace. Built during the reign of King Chulalongkorn, King Rama V, His Majesty to be built as a small palace Since the reign of King Rama VI, he ordered to demolish some of the original palaces. and built 4 more residences, namely the Waikunthathepyasathan Throne Hall, Phiman Chakri, Si Suttniwat Thaowarat Prasarom and Udomwanaporn are connected together.