Machu Picchu is really old

Machu Picchu is a very old ghost town in Peru!!!!http://www.livescience.com/22869-machu-picchu.html

It is more than 7 thosand feet above the sea on the side of a mountain and is very beautiful even though its a ghost town. It was constructed in the 1400s to be a place for people to live on the side of a mountain but people left and now it is deserted except for people who go to see it. OK, that's about all I'm aware of about Machhuu Picchu!