The Aztecs lived in the central highlands of Mexico, in the region known as Mesoamerica. They founded their empire around 1300 and it lasted until 1521, when Spanish conquistador Hernán Cortés conquered their capital Tenochtitlan. The Aztec empire stretched across hundreds of kilometres, from the Gulf of Mexico to the Pacific Ocean and from the mountains around Tenochtitlan to the jungles of South America.