Arizonas Wave Canyon in near the border to Utah. The erosion of this canyon brings out the Navajo Sandstone of the Jurassic Age. There have been finding of dinosaur tracks and fossils. This beautiful canyon is probably one of the most artistic natural landmarks in the world.
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 Was originally made of wood and was used for trains.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.