Tourism in Peru tourism forms the largest sector of the tourism industry in Peru. Pre-Columbian civilizations – most notably the Inca Empire, Chavín, Moche, and Nasca – left a large archeological and cultural impact on the nation. The ruins of Machu Picchu are the most internationally recognized of all the ruins of Peru and therefore receive the most tourists. The other popular ruins are those of Chan Chan, Sipán, Kuelap, Nazca Lines, Ollantaytambo, Caral, Sacsayhuamán, and Sillustani. Tourists also visit the Spanish colonial architecture in many cities in Peru. Some of the most outstanding examples of Spanish colonial architecture are in the cities
Geography of South America number of rugged, generally dry "islands", the highest of which is the Sierra de Cordoba near the city of that name. Argentine Patagonia is a Paleozoic plateau now heavily dissected by rivers flowing from the Andes. The largest country in South America by far, in both area and population, is Brazil. Regions in South America include the Andean States, the Guianas and the Southern Cone. As part of the Hadley model of atmospheric circulation, the equator is characterised by the ascending branches of separate meridional cells, driven by intense insolation. The vertical convection draws in air from the surrounding atmosphere,