Britannica AI Icon
Adding us as a Preferred Source tells Google you trust our content, so our articles show up more often in your Google Search, Discover feed, and AI Overviews.
verifiedCite
While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions.
Select Citation Style
Feedback
Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login).
Thank you for your feedback

Our editors will review what you’ve submitted and determine whether to revise the article.

Triumphal arch

architecture

Triumphal arch, a monumental structure pierced by at least one arched passageway and erected to honor an important person or to commemorate a significant event. It was sometimes architecturally isolated but usually was built to span either a street or a roadway, preferably one used for triumphal processions.

Although associated with ancient Roman architecture, the origins and significance of the triumphal arch are still not fully understood. It was a separate structure, having no connection with city gates or city walls, and should not be confused with the Porta Triumphalis, a gateway through which the victorious Roman army had to pass before entering the sacred city territory (pomerium) of Rome.

The basic form of a triumphal arch consists of two piers connected by an arch and crowned by a superstructure, or attica, that serves as a base for statues and bears commemorative inscriptions. In early arches the attic statuary usually represented the victor in his triumphal chariot; in later ones only the emperor was depicted. The function of the arch, therefore, seems to have been that of an honorary monument of unusual importance; it was so interpreted by the only ancient author who discussed it, Pliny the Elder (23–79 ce).

Few triumphal arches are known from the time of the republic. In Rome three were erected: the first, in 196 bce, by Lucius Stertinius; the second, in 190 bce, by Scipio Africanus the Elder on the Capitoline Hill; and the third, in 121 bce, the first in the Forum area, by Quintus Fabius Allobrogicus. All carried statuary, but little is known of their architectural form, and there are no remains.

Most of the triumphal arches were built during the empire period (27 bce to 476 ce). Early in the 4th century ce, for example, there were 36 such monuments in Rome. The imperial-style structure was sometimes expanded to three arches with the central arch reaching a greater height than the two side arches. The triumphal arch of the empire was articulated by a facade of marble columns; ornamental cornices were added to the piers and attics, and the archway and sides were adorned with relief sculpture depicting the emperor’s victories and achievements.

In Rome three triumphal arches have survived: the Arch of Titus (81 ce), with relief sculpture of his triumph over Jerusalem; the Arch of Septimius Severus (c. 203–205), commemorating his victory over the Parthians; and the Arch of Constantine (312), a composite product, decorated with reused material from the times of Domitian, Trajan, and Hadrian. Outside Rome, notable ancient examples include the arches of Augustus at Susa in modern-day Iran, Aosta in Italy, Rimini in Italy, and Pola in Croatia; the arches of Trajan at Ancona in Italy and Benevento in Italy; the arch of Marcus Aurelius at Tripoli in Libya; and that of Septimius Severus at Leptis Magna in Libya.

1 of 5

Triumphal arches have reappeared, imaginatively transposed, in the facades and interiors of churches, such as that of San Andrea in Mantua, Italy (begun 1472), by Leon Battista Alberti, and even in fountain design, as at the Trevi Fountain in Rome (begun 1732), by Nicola Salvi.

Among the triumphal arches built since the Renaissance, noteworthy examples include the triumphal arch of Alfonso I (1453–70), Naples; Porte Saint-Denis (1672), Porte Saint-Martin (1674), and the Arc de Triomphe (1836), all in Paris; Marble Arch and Wellington Arch(both built in 1830) in London; and Washington Square Arch (completed 1895) in New York City. The triumphal arch’s symbolic power was still recognized in the 21st century, as demonstrated by U.S. Pres. Donald Trump’s 2025 proposal to build a massive arch in Washington, D.C., to honor the nation’s 250th birthday. The plan received initial approval, but it has been opposed by military veterans and some members of the public.

The Editors of Encyclopaedia BritannicaThis article was most recently revised and updated by Alicja Zelazko.