Machu Picchu

This UNESCO World Heritage Site is often referred to as "The Lost City of the Incas". Building commenced in about 1450 at the height of 7,800 feet. This 100-acre site contains temples, homes, irrigation systems, warehouses, and steps that descend the mountain. There is no direct road from Cusco, but a 3.5-hour rail journey will take you to Aguas Calientes where shuttle buses zig-zag up the mountain to Machu Picchu.