What Is Machu Picchu?

Machu Picchu is a place In the mountains near to the Cuzco city, it is surrounded by a jungle, it is eight thousand feet over sea level.
This city was built in the year one thousand four hundred fifty of the Christian era during the reign of the emperor Pachaqutec, it is very difficult to now what was the purpose of this city but many studious believe that its main purpose was mainly to be a religious and military fortress and it seems to be a refuge to the Inca empire when enemies attack.
The most important nearly places are Cuzco City, the capital of the empire that is about one hundred twelve kilometers of distance, other places are the sacred valley, in the north the Amazon Jungle and bordered by Urubamba river.
The walls are mostly common