Sacsayhuaman

Archaeological Finds that are Still Baffling Researchers

The shocking thing about this citadel is its architecture. Built before the 13th  century this wall, is all stones and no mortar. One of the most intriguing facts about this UNESCO World Heritage Site is, built with no mortar there is no space to even slide a needle between them. Moreover, this site is at an altitude of 3701 meters no one knows who built this site.