The Forum of Augustus, built in 42 BC, follows the layout of the Forum of Caesar, Augustus's adoptive father. In the middle and at the far end stand several columns from the Temple of Mars Ultor, built following the victory over Brutus and Cassius, Caesar's murderers, in Philippi in Greece. The temple was once used as a reliquary for Caesar's sword and it was here that members of the Imperial family came for the ceremony of the toga virilis which marked the passage from adolescence to manhood.