inca wall in ancient city of machu picchu, peru, south america.example of polygonal masonry

america american ancient and angled archaeological architectural architecture art artifact background block brick building buildings civilization construction craftsman culture cusco detail famous heritage history inca incan jigsaw landmarks locations lost machupicchu mason masonry multisided old pattern peru peruvian polygonal rocks rubble ruin sacred site solid south stones stonewall stonework texture travel unesco wall world