The altar of Augustan Peace (Ara Pacis Augustae) was built between 13-9 BC in Rome to commemorate Augustus' return from military campaigns. It features relief sculptures depicting Roman mythology and Augustus' family. The exterior sculptures symbolize themes of fertility and prosperity under Augustus' rule, while the interior housed sacrifices to honor the peace and fertility he brought. The altar was constructed of travertine, marble, and tufa and measured over 10 meters wide and 6 meters tall.