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Photo: A. Hunter Wright, CC BY-SA 3.0 via Wikimedia Commons
Erected in 203. You can see it close up from Via della Curia also (without entering the Forum).
The Arch of Septimius Severus at the northwestern end of the Roman Forum is a white marble triumphal arch dedicated in 203 AD to commemorate the Parthian victories of Emperor Septimius Severus and his two sons, Caracalla and Geta, in the two campaigns against the Parthians of 194–195 and 197–199. After the death of Septimius Severus, his sons Caracalla and Geta were initially joint Emperors. Caracalla had Geta assassinated in Rome; in the practice now known as damnatio memoriae, Geta's memorials were destroyed and all images or mentions of him were removed from street buildings and monuments. Accordingly, Geta's image and inscriptions referring to him were removed from the arch.
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San Pietro in Carcere
Romans and leaders of Rome's defeated enemies were imprisoned here where they either died of starvation or strangulation. According to legend, St. Peter was also imprisoned here.
Foro Romano
If stones could talk: these hallowed ruins were the most powerful seat of government in the world. To stand in the political, legal and religious centre of the whole Roman Empire brings shivers down one's spine. It is the best way of imagining the splendour and glory of ancient Rome. Located in a small valley between the Capitoline and Palatine hills, access to the Forum is by foot only, from an entrance on the Via dei Fori Imperiali. Wheelchair access is available for most of the Forum but be aware that the path is often bumpy due to it containing original stones from the ancient Roman period. The Forum is much less crowded than the Colosseum and, from a historical perspective, much more interesting. You can hire an audioguide for €5.5 from a small booth just above the Arch of Titus near the Colosseum. These audioguides contain an audio jack so that two people can easily share one.
The remains of the ancient Roman archives, where Cicero and Seneca did research. Visible from the Forum and accessible through the Capitoline Museum.
Completed in 179 BC.
Tempio di Divo Giulio Cesare
Finished in 29 BC, marks the spot of Caesar's spontaneous cremation and Mark Antony's funeral speech, made famous by Shakespeare in his play Julius Caesar ("Friends, Romans, Countrymen, lend me your ears ...").
On top of the Capitoline hill. The piazza was designed by Michelangelo. The Capitoline Museum is housed in the palaces flanking the piazza. You can walk behind the Palazzo Senatorio, where Rome's government meets, to a wonderful viewpoint which overlooks the entire Roman Forum. In the centre of the square you can admire an exact copy of the Statue of Marcus Aurelius on horseback; the original is kept in one of the two museums, to preserve it from pollution.