High Bridge Trail State Park in Virginia; over 30 miles long; a shared-use trail. Is 2,400 feet long and ranges from 60 to 125 feet high. Was originally made of wood and was used for trains. After the last train crossing in 2004, the abandoned tracks were donated (in 2006) to the state park system, and restored between 2008 and 2012.
Out'n'About Treehouses Treesort, Takilma, Oregon | Every tree house in this miniature village is unique. There are 18 designs to choose from. Prices vary according to season, and range from $80 to $280. 300 Page Creek Road, Cave Junction, Ore.; +1 541 592 2208; www.treehouses.com