The Arch of Septimius Severus is a triple triumphal arch once located in the Roman Forum (Forum Romanum) near the Temple of Concordia and the Rostra. Inscriptions (originally in bronze letters) on both sides of the attic state that the arch was erected by the senate in 203 AD to commemorate victory by Septimius Severus over the Parthians and his sons, Caracalla and Geta. Later, following his murder by Caracalla, the name of Geta in the fourth line was chiseled away, and further honorific titles for Septimius and Caracalla were added in its place. 
This triple arch was made of travertine, faced with marble. It was around 25 meters high and 23 meters high. The central is around 12 meters high and 7 meters wide. A road only ran through the central passage, the side passages were approached by steps. All of the passages have coffered ceilings. The side arches communicate with the central passage by vaulted passages. 
The façade of the arch is extensive decorated. There are eight fluted columns with composite capitals on each façade of the arch. The columns rest on high plinths that are decorated with captives. Depictions of river gods are found in the spandrels of the side arches, while Victorias are depicted in the spandrels of the central arch. Above the side arches are depictions of the war against the Parthians. It originally had various gilded statues, including Septimius Severus riding a chariot in triumph, with his sons mounted on horseback on each side.