It is in the ancient Campus Martius. Julius Caesar was killed in the Curia of the Theatre of Pompey, and the spot he was believed to be assassinated is in the square.[2]
THE ARA PACIS AUGUSTAE (LATIN, "ALTAR OF AUGUSTAN PEACE"; COMMONLY SHORTENED TO ARA PACIS) IS AN ALTAR IN ROME DEDICATED TO PAX, THE ROMAN GODDESS OF PEACE.