 Together with Cirta, Collo and Rusicade, Milevum formed the confederation known as the Four Colonies, the territory of which was very extensive.In the 6th century the Byzantine Emperor Justinian had Milevum enclosed by a fortified wall, which still stands and forms a rampart for the Muslim city of Mila.It has yielded quite a number of Latin inscriptions from this city and a colossal statue of Saturn.