In the past many large cities were called a metropolis due to their size or importance; such as: Alexandria, Angkor, Antioch, Athens, Babylon, Baghdad, Beirut, Benares, Byblos, Cahokia, Carthage, Constantinople, Corinth, Damascus, Dholavira, Ephesus, Great Zimbabwe, Harappa, Jerusalem, Kangla, Leptis Magna, Nanjing, Nineveh, Macchu Picchu, Mohenjo-Daro, Rome, Sarai, Side, Siracuse, Tenochtitlan, Teotihuacan, Tikal, Tyre, Xian and Ur.