Megalithic Evidence That Cusco Existed Before The Incas, Oct 2015, Video, UFO Sighting News.

Date of video: Oct 23, 2015
Location of ruins: Cusco, Peru

Here is an interesting theory. DanielofDoria02 of Youtube says he believes that the Incas built around a previous construction that they found, reinforcing it with their own added stones. That the giant Basalt carved square rocks were created from a much more ancient and advanced society. Perhaps even ancient aliens.

I have to admit, it does look like it at first glance and it also makes a lot of sense. Tell us your thoughts on this in comments below. 
Scott C. Waring