We visited four Incan ruins today in the Cusco area. The largest and most impressive was Sacsayhuamán (proununced ¨Sexy Woman¨). The fact that it was built of stones larger than some houses was truly amazing. And all of it built totally with man power. It served as a fortress for the Inca in their battles against the Spanish and when it eventually fell, pieces of it were carted away to help build the city of Cusco.