ʻIolani Palace
 ʻIolani Palace in the capitol district of downtown Honolulu in the U.S. 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.