Native Americans on horseback petroglyphPetroglyphs of Native Americans hunting on horseback, Canyon de Chelly, Arizona. Photograph
Anasazi / Ancestral Puebloan architecture, UtahRound and square towers of Anasazi/Ancestral Puebloan, Howenweep National Monument, Utah. Photograph
Anasazi / Ancestral Puebloan ruins at Howevweep, UtahAnasazi/Ancestral Puebloan ruins at Howenweep National Monument, Utah, with Sleeping Ute Mountain in the background. Photograph
Appomattox, site of Civil War surrenderMcLean House, Appomattox Court House, Virginia, where Lees Confederate army surrendered, 1865. Photograph