Moray terraces, outside Cusco.
During the Inca Empire, it used to be an agricultural experimental Inca site: as they conquered the different countries and regions, they brought back different fruits and vegetables which grew at different altitudes and in different climates. For these to slowly adapt to their local climate, they would then plant them in the center, i.e. in the lowest and warmest level. Little by little they would move them up a level, and another, and another until the plant was thus completely adapted to its new environment. Pretty cool!