Pueblo Bonito Called Pueblo Bonito (“pretty village”) by the Spanish, this great house of the Ancestral Pueblo people was at its high point in the eleventh century C.E. The circular structures, known as kivas, were probably ceremonial sites. Their prominence, and the absence of major trash collections, have persuaded some scholars that Pueblo Bonito was more of a ritual center than a residential town. (Courtesy, Chaco Canyon National Historic Park)