13.2581°S, 72.2633°W.
Ollantaytambo is a fortified Inca royal estate and ceremonial center in the Sacred Valley of the Incas, 60 kilometres northwest of Cusco at 2,800 metres elevation. The site was built during the reign of Pachacuti in the mid-15th century as a personal estate and acquired its defensive character during the early Spanish conquest, when Manco Inca defeated a Spanish force here in January 1537 before retreating to Vilcabamba. The Temple of the Sun on the upper terrace features the Wall of Six Monoliths — six dressed pink-rhyolite blocks weighing up to 50 tonnes each, quarried at Kachiqhata across the Urubamba River and 6 kilometres distant uphill. The terraced agricultural sector below the temple is still farmed by residents of the original Inca-platted town at the foot of the mountain.
The streets of the lower town preserve the original Inca block layout intact, with stone-channeled water still running in the gutters along each lane.