The main attraction in the palace compound is the Throne Hall. Topped by a 59m-high tower inspired by the Bayon at Angkor, it was inaugurated in 1919 by King Sisowath. The Throne Hall is used for coronations and ceremonies such as the presentation of credentials by diplomats. Many of the items once displayed here were destroyed by the Khmer Rouge.
South of the Throne Hall, check out the curious iron Napoleon II Pavilion. Given to King Norodom by Napoleon III of France, it was hardly designed with the Cambodian climate in mind.