Maryland Park Service rangers stand at the entrance to the exhibit hall of the Harriet Tubman Underground Railroad Visitor's Center before a media preview on Friday, March 10, 2017 in Church Creek, Md. (AP Photo/Brian Witte)
Featured Photo Galleries
Maryland Park Service rangers stand at the entrance to the exhibit hall of the Harriet Tubman Underground Railroad Visitor's Center before a media preview on Friday, March 10, 2017 in Church Creek, Md. (AP Photo/Brian Witte)
