2012 Peru

Sacsayhuamán (also known as Saksaq Waman, Sacsahuaman or Saxahuaman) is a walled complex on the northern outskirts of the city of Cusco, Peru, the former capital of the Inca Empire. The complex is as many other Inca constructions made of large polished dry stone walls, each boulder carefully cut to fit together tightly without mortar. (from Wikipedia)