Formerly this area was gardens and fields called Phayathai Field. King Rama V ordered a new residence to be built here for both relaxation and conducting agricultural experiments. The Royal Ploughing Ceremony was held at this palace several times.After King Rama V passed away.Queen Saovabha moved to take up residence here. King Rama VI later ordered the building of five Western- style throne halls.

On their completion, King Rama VI named the palace Phayathai Royal Palace and moved Dusit Thani, a model city established by the King to introduce the Thai people to democracy, into the palace compound.

During the reign of King Rama VII, the State Railways of Thailand asked Royal permission to turn the palace into the Phayathai Hotel. When radio broadcasting was introduced, the Phayathai Palace became the Bangkok Radio Broadcasting Station.

The palace was later presented to the Royal Thai Army to be used as a hospital. Today, it is part of King Mongkut Hospital, Some of the old buildings now are being maintained by the Department of Fine Arts, but the modil city of Dusit Thani no larger exsits. Hours of Operation: Saturday 9.30-1.30 p.m.