Arch of Titus, Rome, spanning the Via Sacra, view from the Colosseum

The Arch of Titus (Italian: Arco di Tito; Latin: Arcus Titi) is a 1st-century A.D. honorific arch, located on the Via Sacra, Rome, just to the south-east of the Roman Forum. It was constructed in c. A.D. 82 by the Roman Emperor Domitian shortly after the death of his older brother Titus to commemorate Titus' victories, including the Siege of Jerusalem in 70 AD. The Arch of Titus has provided the general model for many of the triumphal arches erected since the 16th century.

The Via Sacra (Latin: Via Sacra) (Sacred Road) was the main street of ancient Rome, leading from the top of the Capitoline Hill, through some of the most important religious sites of the Forum (where it is the widest street), to the Colosseum.
The road was part of the traditional route of the Roman Triumph that began on the outskirts of the city and proceeded through the Roman Forum.
In the 5th century BC, the road was supported by a substructure to protect it from the rain. Later it was paved and during the reign of Nero it was lined with colonnades.
The road provided the setting for many deeds and misdeeds of Rome's history, the solemn religious festivals, the magnificent triumphs of victorious generals, and the daily throng assembling in the Basilicas to chat, throw dice, engage in business, or secure justice.

more on https://en.wikipedia.org/wiki/Arch_of_Titus and https://en.wikipedia.org/wiki/Via_Sacra