Dr. Beth Harris and Dr. Steven Zucker provide a description, historical perspective, and analysis of the Ara Pacis Augustae (Altar of Augustan Peace).

On my return from Spain and Gaul after successful operations restoring law and order in these provinces, the Senate voted, during the consulship of Tiberius Nero and Publius Quintilius, in honor of my return, that an altar to Peace be consecrated in the Campus Martius, and that on this altar the magistrates, priests, and Vestal Virgins are to make annual sacrifices.

—Res Gestae Divi Augusti II.12

Ara Pacis Augustae (Altar of Augustan Peace), 13–9 BCE.