I went out alone (Chris is with her host family learning more Spanish) to the nearby ruins of Ollantaytambo and Pisaq. Both built by the Incas, the first was a holy place, a fortress, and an experimental farm - those Incas did everything everywhere. The second was more of the same. By using terraces to create microclimates, the Incas were able to create and harvest 4000 different kinds of potatoes and 800 different kinds of corn - quite the achievement. Unfortunately, due to the difficulty of creating terraces, no one farms this way anymore.
Near the end of the day, we stopped at a weaving demonstration where they showed every step from washing the alpaca wool up to the finished weaving. The natural dyes from plants and such are still often used. It was my favourite part of the tour.