MachuPicchu is a pre-Colombian 15th century Inca site at 7970 Ft height above sea level on a mountain ridge above Urubamba Valley in Peru, which is 80 kilometers northwest of Cusco, cultural City of Peru and through which the Urubamba River flows. I visited that site in the month of April, 2011 (15th April to 24th April). Archaeologistsbelieve that Machu Picchu was built as an estate for the Inca emperor Pachacuti (1438–1472). This city was referred to as the “Lost City of the Incas”. It is the most familiar icon of the Inca World. An American historian Hiram Bingham discovered thissite in 1911 and from that time it has become a tourist attraction. Most of the outlyingbuildings have been reconstructed in order to give tourist a better idea of what the structure was originally looked like. This site was never known to the Spaniard during their conquest and Peruvian believed that only for that reason this cultural site is relatively intact. It was declared as UNESCO World Heritage Site in 1983 and in 2007 it was voted as one of the new Seven Wonders of the World. Machu Picchu was built in the classical Inca style with polished dry stone walls. The primary buildings are Intihuatana, the Temple of the Sun and the room of the three windows. I have also visited other pre-Inca & Inca sites and other places of interest in Cusco and Lima, capital of Peru.