The Throne Hall is a two-storey construction with a large dome (49.5 m high) in the centre, surrounded by six smaller domes. The domes and walls are covered with paintings by Professor Galileo Chini and Carlo Riguli depicting the history of the Chakri Dynasty, from the first to the sixth reign.
In front of the Hall is the Royal Plaza with the equestrian statue of King Chulalongkorn (Rama V).