Machu Picchu is virtually synonymous with Peru, and in 2007 it was voted one of the New Seven Wonders of the world. There is a reason for this: when you arrive, you encounter a breathtaking, panoramic view of the Andes.
This Inca citadel was built during the 15th century, but remained unexplored until 1911 when explorer Hiram Bingham found it covered by the forest. It is still a mystery why Machu Picchu was built on top of the hill, so far from the seat of the Incan Empire in Cusco. We are also still unsure of the technology used to construct such an impressive feat of engineering in a such harsh location.
If you arrive early in the morning, and on a good day, you can see the sunrise from the sun gate. If you have enough time there, climb Huayna Picchu and enjoy the view from the top. It will take about 1.5 hours each way.