 The main temple of Tenochtitlan known as Templo Mayor or the Great Temple was 100 meters by 80 meters at its base, and 60 meters tall.The city ultimately fell in 1521 when it was destroyed by the Spanish conquistador Hernán Cortés in 1521.Cortés and the Spaniards raided the city for its gold supply and artifacts, leaving little behind of the Aztec's civilization.