The Sacred Valley of the Incas (El Valle Sagrado de los Incas) is where it all started. Inca civilization began here when Manco Capac, as the legend goes, came upon the valley from Lake Titicaca and founded the city of Cuzco. One of the greatest civilizations the world had ever seen grew from there. The valley is dotted with spectacular Incan and pre-Incan ruins, not to mention the world-renowned site of Machu Picchu and several other lost cities.