Mesa Verde National Park, found in south western Colorado, not too far from Durango Colorado is a fascinating place to go and see. This is a National Park, not based on it's unique and beautiful natural places, but for it's historical importance. One of the few National Parks to do this. Check out more of my trips by clicking on the picture.
This is what is called the Tower House and it is one of many, many ruins from a group of native Americans called the Pueblo people. It is a fascinating place to walk around and to see how these people lived from about AD 600-1300. These are some of the best preserved ruins. Most of the ruins are viewable only with a ranger guided tour, but a few are open for self-guided tours. You can check the schedule here.