What Roman triumphal arch in Libya was dedicated to Emperor Septimius Severus and his family?

The Roman triumphal arch in Libya dedicated to Emperor Septimius Severus and his family is the Arch of Septimius Severus at Leptis Magna.

Leptis Magna was the emperor’s birthplace and one of the most important cities of Roman North Africa. The arch was probably erected around AD 203, during Severus’s visit to Africa, and celebrated his military victories and imperial family. It was built as a tetrapylon—a four-way arch—where the city’s main north–south and east–west roads met.

Its limestone core was faced with marble and decorated with Corinthian columns, trophies, Victories, floral carvings, and relief panels showing the imperial household in ceremonies and triumphal scenes. The monument’s broken pediment and ornate style also reflect strong eastern Mediterranean influences.

The arch fell into ruin after Leptis Magna was abandoned in late antiquity. Archaeologist Giacomo Guidi discovered its fragments beneath sand in 1928, and the structure was reconstructed through anastylosis. It is often confused with the similarly named Arch of Septimius Severus in Rome, but the Libyan monument is the one associated with Leptis Magna and the emperor’s African origins.