The Arch of Constantine is a triumphal Arch in Rome, situated between the Colosseum and The Palatine Hill. It was erected by the Roman Senate to commemorate Constantine’s Victory over Maxentius at the battle of Milvian Bridge on October 28, 312. The Arch is 21m high, 25,9m wide and 7,4m deep. It has three archways, the central one being 11,5m high and 6,5m wide, the lateral archways 7,4m by 3,4m each. The top, called attic, is a brickwork reveted with marble. A staircase formed in the thickness of the each arch is entered from a door at some height from the ground, in the end towards the Palantine Hill. Rome, Italy.