The builders of Pueblo Bonito knew when they started that they were going to build four or five stories but the walls weren't erected in a single operation. As the height for each story was reached, beams were built into the wall, and the ceiling covered to provide a platform from which to work while raising the walls another stage.
Constructed over three acres of land around 850 A.D., Pueblo Bonito had five stories, 800 rooms and 40 kivas housing 1,200 Anasazi - ancestors of today's Pueblo Indians.
The Chacoans were highly-skilled masons, building their cities of sandstone blocks mortared with mud, without metals tools or formal mathematical knowledge.
Pueblo Bonito is a massive semi-circular "great house" that was used from 850 A.D. to around 1150. It encompasses many ceremonial kivas as interconnected cells.
OPEN: Memorial Day-Labor Day, daily 8-6
Labor Day-Memorial Day, daily 8-5
ADMISSION: $8 per vehicle
Climb the trail that goes up the cliffs overlooking Chaco Canyon. It is totally worth it. You get fantastic views of the ruins.
On the morning of the winter solstice in December, the rays of the rising sun shine through this window and strike the opposite corner of the room behind it.