A Triumphal Arch is a type of monumental arch that was traditionally built to commemorate military victories, public works, and other significant events in ancient Rome. Triumphal Arches were often located at the end of a long road, symbolizing the entrance into the city.
These arches were typically made of stone or concrete and were adorned with reliefs, sculptures, and inscriptions commemorating the event or person they were built for. The most famous Triumphal Arch in Rome is the Arch of Titus, built in the first century AD to commemorate the victory of the Roman Empire over Jerusalem in 70 AD.

The Arch of Constantine is another famous example, built in the fourth century AD to celebrate the victory of the Emperor Constantine over Maxentius. Triumphal Arches were also built in other parts of the Roman Empire, including France, Spain, and North Africa. Many of these arches still stand today, and they continue to be a popular tourist attraction and an important symbol of ancient Roman architecture and culture.