The Nazca Aqueducts (Puquios)
400–600 CE
The Nazca people of Peru built a sophisticated underground aqueduct system called puquios that channelled water from the Andes aquifer across the hyper-arid Nazca Desert — one of the driest places on Earth. The system uses spiral openings (ojos) that act as wind funnels to drive water through the underground channels using air pressure. The puquios still function today, 1,500 years after they were built.