books.google.com - Tipon: Water Engineering Masterpiece of the Inca Empire reveals the beauty and the ingenuity of this little-known jewel of the Inca Empire. Located down the Huatanay River Valley by the Inca capital of Cusco, Tipon is a 500-acre, self-contained, walled settlement that served as an estate for Inca nobility....http://books.google.com/books/about/Tipon.html?id=nypeZnPjS30C&utm_source=gb-gplus-shareTipon
