May 3, 2012 (Honolulu, Hawaii) – ‘Iolani Palace Barracks ʻIolani Barracks, or Halekoa (house [of] warriors) in Hawaiian, was built in 1870, designed by the architect Theodore Heuck, under the direction of King Lot Kapuaiwa. Located directly adjacent to ʻIolani Palace in downtown Honolulu, it housed about 80 members of the monarch’s Royal Guard until the overthrow of the Monarchy in 1893. It was added to the National Register of Historic Places in 1978 as part of the Hawaii Capital Historic District. More: en.wikipedia.org ʻIolani Palace, in the capitol district of downtown Honolulu in the US state of Hawaiʻi, is the only royal palace in the United States used as an official residence by a reigning monarch and is a National Historic Landmark listed on the National Register of Historic Places. Two monarchs governed from ʻIolani Palace: King Kalākaua and 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. More: en.wikipedia.org