Iolani Palace is the only royal palace in the United States used as an official residence by a reigning monarch. It is located in the capitol district of downtown Honolulu, and is listed as a National Historic Landmark.
The palace was built in 1882 by Hawaii's last king, David Kalakaua, one of the only two monarchs who was able to govern from it, the other being his sister, Queen Liliʻuokalani. After the monarchy was overthrown in 1893, the building was used as the capitol building for the Provisional Government, Republic, Territory, and State of Hawaiʻi until 1969. The palace was restored and opened to the public as a museum in 1978.
The stately three-story building is a real treat to tourists. The Palace Galleries showcases jewels and regalia from the days of Hawaiian royalty. Guided tours are offered every 30 minutes and reservations are suggested.