Temple of the Condor, Machu Picchu, c. 1450 — Inca masons shaped a natural rock outcrop into the outstretched wings of a condor, with a carved stone on the floor forming the bird's head. The temple may have served as a place of judgment or sacrifice, its design blending architecture with the living rock of the mountain.
© Jorge Láscar from Australia, CC BY 2.0, via Wikimedia Commons