 In 1997 , the Museum of Science and Natural History merged with the Little Rock Children 's Museum , which had been located in Union Station , to form the Arkansas Museum of Discovery . The new museum was relocated to a historic building in the Little Rock River Market District . The MacArthur Museum of Arkansas Military History opened on May 19 , 2001 in the Tower Building . The new museum 's goal is to educate and inform visitors about the military history of Arkansas , preserve the Tower Building , honor servicemen and <unk> of the United States and commemorate the birthplace of Douglas MacArthur . 
