Dome

Frieze, upper west side (short side), Medallion of the Moon with the frieze below, "Departure from Milan"; The main sculpture from the time of Constantine (as opposed to spolia, re-used elements) is the "historical" relief frieze running around the monument under the round panels, one strip above each lateral archway and at the small sides of the arch. These reliefs depict scenes from the Italian campaign of Constantine against Maxentius which was the reason for the construction of the monument. The frieze starts at the western side with the "Departure from Milan". It continues on the southern, "outward" looking face, with the siege of Verona, which was of great importance to the war in Northern Italy; also on that face, the Battle of Milvian Bridge with Constantine's army victorious and the enemy drowning in the river Tiber. On the eastern side, Constantine and his army enter Rome; the artist seems to have avoided using imagery of the triumph, as Constantine probably did not want to be shown triumphant over the Eternal City. On the northern face, looking "towards" the city, two strips with the emperor's actions after taking possession of Rome: Constantine speaking to the citizens on the Forum Romanum, and distributing money to the people. Source: Wikipedia; http://en.wikipedia.org/wiki/Main_Page (accessed 7/16/2010)