At Monte Sacro, on Via Nomentana, you reach this lovely bridge with towers and battlements: its history includes the appeasement between Menenius Agrippa and the Roman plebeians, after the rebellion of the latter who took refuge on Monte Sacro. The bridge was later destroyed and rebuilt, and it has been identified as the bridge on which Pope Leo III and Charlemagne met for the coronation of the Carlovingian king as emperor. The Nomentano bridge was the site of many battles over the centuries, and the successive rebuilding operations led to its fortification.