Known as the Hudson River SkyWalk, the project will feature a pedestrian trail linking historic sites on the opposite sides of the river: the Thomas Cole National Historic Site in Catskill and the Olana State Historic Site in Hudson. (chicagotribune.com)
Volunteers at Golden Gate National Recreation Area, Muir Woods National Monument, and Fort Point National Historic Site help present the diverse resources of one of America's most popular National Parks to today's visitors, and help preserve these precious resource for future generations. (nps.gov)
You can also explore the Summit Ridge interpretive boardwalk, a 1 km long elevated board - walk that leads you along Sulphur Mountain's summit ridge to the Cosmic Ray Station National Historic Site of Canada, and the historic Sanson's Meteorological Station. (caravan.com)