Exploring Inca ruins in Pisac revealing megalithic construction and ancient engineering that still raises questions today ...
Karen Klotz, Michael Sanio, ASCE director of International Alliances and ASCE President-Elect Wayne Klotz peer through a reconstructed doorway in the Incan citadel of Machu Picchu in Southern Peru.
I saw the evidence of Inca engineering skill in the tour that took me to Machu Picchu.Only in hindsight, when I was preparing to write about it, did I begin to fully appreciate the Inca Empire's ...
Brien Foerster on MSN

Ancient Sun Gate near Cusco Peru

The ancient Sun Gate near Cusco Peru standing as a powerful symbol of Inca engineering and astronomy ...