Cuzco in Quechua means "center of the world", from when it was the capital of the Inca empire. UNESCO declared Cuzco a World Heritage Site in 1983. Altitude. Cuzco: 3,360 masl (11,020 ft.
The Incas built the huge fortress and religious site of Sacsayhuaman on a hill above Cuzco. When the Incas built Sacsayhuaman, they shaped massive rocks with great precision. The massive blocks, the largest being 8.5m high and weighing nearly 300 tonnes, are fitted together with absolute perfection.