13.4242°S, 71.8578°W.
Pisac is an Inca royal estate on a steep ridge above the Urubamba River in the Sacred Valley, 33 kilometres northeast of Cusco. Built during the reign of Pachacuti in the mid-15th century, the site combines agricultural terraces, a residential sector, ceremonial precincts including the Intihuatana platform with a carved stone gnomon, and a hillside cemetery with thousands of looted tombs cut directly into the cliff face — once the largest known Inca burial ground. The Q'allaqasa temple sector at the top of the ridge contains some of the finest ashlar masonry surviving from the imperial period, with curved walls fitted around natural rock outcrops. John Hyslop and others mapped the site systematically in the 1980s. The terraced agricultural amphitheatre below the temple sector still produces maize and quinoa under restored Inca irrigation channels.
The cliff cemetery's empty tomb niches still pockmark the orange rock face in long horizontal bands.