Chaco Culture National Historical Park, located in northwestern New Mexico, is a remarkable testament to the ancient Puebloan civilization that thrived between 850 and 1250 CE. This UNESCO World Heritage Site features a collection of monumental stone buildings known as great houses, kivas, and other structures, set against a backdrop of a stark and beautiful desert landscape. The park preserves one of the most significant and culturally rich areas of pre-Columbian history in the United States, offering insights into the Chacoans' sophisticated architecture, society, and astronomy.