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.

Machu Picchu is often presented as a single Inca masterpiece, but the architecture tells a more complicated story. Across the terraces and retaining walls, there are signs of massive older foundations ...

Part 2 of Engineering the Inka Empire: A Symposium on Sustainability and Ancient Technologies Kenneth Wright and Ruth Wright examine the Inka road system in the vicinity of Machu Picchu. Here, the ...