MACHU PICCHU, ONE OF THE NEW SEVEN WONDERS OF THE WORLD

Since the site was never known to the Spanish during their conquest, it is highly significant as a relatively intact cultural site. Machu Picchu was declared a Peruvian Historical 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.
Machu Picchu is situated above a loop of the Urubamba River. The location of the city was a military secret, and its deep precipices and steep mountains provided excellent natural defenses.
Machu Picchu was built in the classical Inca style, with polished dry-stone walls. Its three primary buildings are the Intihuatana, the Temple of the Sun, and the Room of the Three Windows.

As well as the venerable Machu Picchu, the Sacred Valley near Cusco City is also recommended to see Inca Ruins.  Many visitors come here every year to hike the Inca Trail... It’s highly recommended.

You can read more about Machu Picchu at Peru Travel Blog.