This building was a royal residence built by King Rama V in 1877. The original design by the British architect, Mr.John Clunish, called for three domes over the building. But by the suggestion of the former regent, Somdej Chao Phraya Borom Haha Sri Suriyawong, King Rama V had them changed to Prasat spires. So, this is the only one building in The Grand Palace that mixed the lower part of the throne hall in European style with Thai style roof. King Rama V used this building as his residence. Later it was used by the King to receive the credentials from ambassadors. And now, this building is used for state banquets. It is three-storeyed building, built on the paln of the letter “T”. The front of the building consists of three parts. They are the East Wing, the Central and the West Wing. These parts are connected by long corridors.