Chaco Culture National Historical Park in New Mexico protects the remains of massive stone buildings – containing multiple levels and hundreds of rooms – built by ancestral Pueblo peoples. Chaco Canyon was home to thousands between 850 and 1250 A.D, and these archaeological ruins testify to organizational and engineering abilities not seen anywhere else in the American Southwest. Photographer James Kaiser wandered around Pueblo Bonito for hours, taking photos and marveling at its beauty: “I’ll never forget how uncrowded and timeless it felt in Chaco Canyon that morning,” Kaiser says. Photo courtesy of James Kaiser.