Tower Building of the Little Rock Arsenal

The Tower Building of the Little Rock Arsenal, also known as the Main Building of the U.S. Arsenal at Little Rock, or Headquarters Building of the Little Rock Barracks, is the home of the MacArthur Museum of Arkansas Military History. It is also a part of the MacArthur Park Historic District, in Little Rock, Arkansas.

Built between 1840 and 1841, it was part of Little Rock's first U.S. military installation. Since decommissioning, the building has housed two local museums. It was home to the Arkansas Museum of Natural History and Antiquities from 1942 to 1997 and the MacArthur Museum of Arkansas Military History since 2001. It has also housed the Little Rock Æsthetic Club since 1894. The building receives its name from its distinct octagonal tower. Besides being the last remaining structure of the original U.S. military installation and one of the oldest buildings in central Arkansas, it was also the birthplace of General Douglas MacArthur, who became the supreme commander of U.S. forces in the South Pacific during World War II. It was also the starting place of the Camden Expedition during the American Civil War.