Chaco Culture National Historical Park is located in northwestern New Mexico and is known for its significant archaeological sites. It was a major center of Ancestral Puebloan culture from AD 900 to 1150, featuring impressive stone buildings and complex road systems. The park preserves the ruins of large multi-story structures, known as great houses, which served as ceremonial and administrative centers. The park is also recognized for its astronomical alignments, with structures oriented to solar and lunar events. Visitors can explore the Chacoan landscape, which includes ancient roads and petroglyphs, providing insight into the lives of the people who once thrived in this region.