Cusco was an important center of indigenous people. It was the capital of the Inca Empire (13th century-1532). The Inca Empire was the largest empire in pre-Columbian America, and possibly the largest empire in the world in the early 16th century. The Empire was unique in that it lacked many features associated with civilization in the Old World. They lacked the use of wheeled vehicles. They lacked animals to ride and draft animals that could pull wagons and plows. They lacked the knowledge of iron and steel. They lacked a system of writing, and yet they were able to construct one of the greatest imperial states in human history. When we looked at the amazing construction of their buildings it is hard to believe how they did it. Every piece of stone fits with exact precision and is perfectly level. This is yet another factor that makes me believe in extra-terrestrial influence. Machu Picchu is an example of this construction. You will see this if you go to my Machu Picchu website.