Thank you for this great posts, it reminds me of my travels to Cuzco! I think we have actually been to the same museum :D
Here's a photo I took at Sacsayhuaman (funny how they actually pronounce it like "sexy woman"):
I tried to find a place at a university in South America, but it turns out that my uni in Germany has partner universities all over Asia, but none in South America so it will be some years until I will be able to return to this amazing continent. Enjoy your time in South America!