The designations within the National Park System can get a little complicated. While we have National Monuments, National Historic Sites, National Seashores, and other National Park Service-managed sites, we don’t have any official national parks in …The designations within the National Park System can get a little complicated. While we have National Monuments, National Historic Sites, National Seashores, and other National Park Service-managed sites, we don’t have any official national parks in …