The highest suspension bridge in America straddles the Royal Gorge as patrons gaze out across sweeping vistas from an aerial tramway, a steep railway, and a Skycoaster ride. Jaws drop on the bridge, a National Register of Historic Places structure that dangles above millions of years' worth of rock layers to delight amateur geologists like a volcano full of candy. Guests cruise 1,178 feet above the canyon base during the aerial tram ride and learn about the Native Americans who hunted and camped in the region. Granite walls tower above the incline railway, a conveyance built in 1931 that carries the adventurous on a 45-degree trip to the bottom of the canyon, where visitors feel cool river spray without insulting a trout. The one-hour terrain trail ride carries riders into Royal Gorge country on mule back to ogle mountain-range panoramas, and the Royal Rush Skycoaster plunges gleefully screaming guests in free fall at up to 50 miles per hour before dangling them over the canyon's lip. Park-goers romp through a variety of other attractions, including the plaza theater, a historical display, and a wildlife park.