A virtual tour of the mysterious megalithic site of Sacsayhuaman - and a look into the 3 styles of architecture that are prevalent here, and on many other ancient sites in the sacred valley of Peru. This is part 2 of my series on this astonishing place. I wanted this to be a little more relaxed and casual than my normal videos, and the goal was to give you a good look around this site, it's one of my favorites, and an enduring mystery.