Very nice. There is a sun temple in Ollantaytambo and as I understood through Internet, before the conquerors it was ornamented with Gold (very special/symbolic pieces).
I also discovered a way to get in and out of the Ollantaytambo ruins (from the back) without paying a penny or doing long trekks, but If you want a guide who explains you what's in there and understand how important that place was, you guys should pay!