On the top floor of the central mansion are kept the royal ashes and the king gives public audiences from the front projection. The second floor serves as an audience hall and the ground floor is the office of the royal guards.
On the top floor of the eastern wing religious objects are kept. the middle floor serves as a reception hall for royal guests. the lower floor serves as a guest waiting room.
On the top floor of the western wing ashes are kept of the royal queens and high ranking princes and princesses. The middle floor is the guest chambers and the lower floor serves as a library.
Two galleries join the central portion to both the east and west wing. The eastern portion also has a reception room where portraits of the kings of the Chakri dynasty from Rama I to Rama VII are displayed. In the west portion is a hall where portraits of the queens of Rama IV, Rama V, and Rama VII are displayed.