Tonto Natural Bridge State Park is located in central Arizona near Payson. It is believed to be the largest natural travertine bridge in the world. The bridge stands 183 feet high over a 400-foot long tunnel that measures 150 feet at its widest point. There are three hiking trails, a picnic area, and a group use area. The park provides habitat for animals, insects, and birds as well as Interpretive exhibits including artifacts on the history of Tonto Natural Bridge, plus information about travertine, prehistoric inhabitants, and the historic Goodfellow Lodge.