Archaeological site of Ollantaytambo, Ollantaytambo District, Sacred Valley, Urubamba Province, Cusco (Cuzco) Region, Peru, South America

archaeological site ollantaytambo ollantaytambo district sacred valley urubamba province cusco cuzco peru south america inca ruins ancient architecture stone structures terraces historical site cultural heritage mountain landscape tourism travel destination historical preservation archaeological heritage indigenous culture inca civilization unesco ancient history valley southern hemisphere peruvian landscape exploration heritage site ancient cultures ruins hiking archeology stonework ancient techniques geological features sky views natural beauty architecture incan architecture rural tourism cultural exploration sand pathways restoration ancient monuments mountainous terrain sacred spaces visitor center heritage tourism cultural significance