I like this paragraph found on world-mysteries.com
When the Spanish conquerors arrived first to these lands; they could not explain themselves how Peruvian "Indians" (ignorant, wild, without any ability of logical reasoning, one more animal species according to conquerors) could have built such a greatness. Their religious fanaticism led them to believe that all that was simply work of demons or malign spirits. Still today, many people believe in the inability of ancient Quechuas to create such a wonder, so they suggest that they were made by beings of some other worlds, extraterrestrial beings with superior technology that made all that possible. However, our history and archaeology demonstrate that those objects of admiration are an undeniable work of the Incas, Quechuas, Andean people or however pre-Hispanic inhabitants of this corner of the world would be named.
Here is a Google Earth aerial photo:
Click here for some photos
From our June trip to Peru.