Inca Roca lived in the 13th or 14th century. Halfway along his palace's side wall, nestled amid other stones, is a famous 12-angled stone, an example of masterly Inca masonry. There's nothing sacred about the 12 angles: Inca masons were famous for incorporating stones with many more sides than 12 into their buildings. If you can't spot the famous stone from the crowds taking photos, ask one of the shopkeepers or the elaborately dressed Inca figure hanging out along the street to point it out. Around the corner is a series of stones on the wall that form the shapes of a puma and a serpent. Kids often hang out there and trace the forms for a small tip.
Hatun Rumiyoc and Palacio, Cusco, Peru