<P> Machu Picchu was built in the classical Inca style, with polished dry - stone walls . Its three primary structures are the Intihuatana, the Temple of the Sun, and the Room of the Three Windows . Most of the outlying buildings have been reconstructed in order to give tourists a better idea of how they originally appeared . By 1976, thirty percent of Machu Picchu had been restored and restoration continues . </P> <P> Machu Picchu was declared a Peruvian Historic Sanctuary in 1981 and a UNESCO World Heritage Site in 1983 . In 2007, Machu Picchu was voted one of the New Seven Wonders of the World in a worldwide Internet poll . </P> <P> In the Quechua language, machu means "old" or "old person", while picchu means "peak; mountain or prominence with a broad base that ends in sharp peaks", hence the name of the site means "old peak". </P> <P> Machu Picchu was built around 1450--1460 . Its construction appears to date to the period of the two great Inca rulers, Pachacutec Inca Yupanqui (1438--71) and Túpac Inca Yupanqui (1472--93). There is a consensus among archaeologists that Pachacutec ordered the construction of the royal estate for himself, most likely after his successful military campaign . Though Machu Picchu is considered to be a "royal" estate, surprisingly, the estate would not have been passed down in the line of succession . It was only used for approximately 80 years before being abandoned seemingly due to destruction of the Spanish Conquests in other parts of the Inca Empire . It is possible that most of its inhabitants died from smallpox introduced by travellers before the Spanish conquistadors arrived in the area . </P>

Where did the name machu picchu come from
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