Natural Bridge holds a unique place in American history as one of the natural wonders and first tourist attractions in the New World. Artists and illustrators popularized its image. This natural semielliptical arch is made of limestone carved by nature over millions of years and is approximately 200 feet high. The Monacan Indians held the site sacred and worshiped there. Thomas Jefferson obtained a land grant on 5 July 1774 to preserve it and to ensure the public could visit it. Natural Bridge was listed on the Virginia Landmarks Register in 1997 and was designated a National Historic Landmark in 1998.