https://ift.tt/2wwdHAe They’ve Been to All 417 National Park Sites. How About You? Historic Buildings and Sites, National Parks, Monuments and Seashores A hardy few have visited every park, monument, preserve, battlefield and historic site overseen by the U.S. National Park Service. It can take decades. LAURA M. HOLSON https://ift.tt/2s1UEsZ May 23, 2018 at 05:30AM