Trajan's Forum in Rome, central area, columns which historically formed the Basilica Ulpia left and Trajan's Column r., modern Italian Altare della Patria in background left

Trajan's Forum (Latin: Forum Traiani) was the last of the Imperial fora to be constructed in ancient Rome. The famous architect Apollodorus of Damascus oversaw its construction.
This forum was built on the order of the emperor Trajan with the spoils of war from the conquest of Dacia, which ended in 106. The Fasti Ostienses state that the Forum was inaugurated in 112, while Trajan's Column was erected and then inaugurated in 113. In modern times only a section of the markets and the column of Trajan remain. A number of columns which historically formed the Basilica Ulpia remained on site, and have been re-erected.
Trajan's Column (Italian: Colonna Traiana, Latin: COLVMNA·TRAIANI) is a Roman triumphal column in Rome, Italy, that commemorates Roman emperor Trajan's victory in the Dacian Wars. It was probably constructed under the supervision of the architect Apollodorus of Damascus at the order of the Roman Senate. It is located in Trajan's Forum, built near the Quirinal Hill, north of the Roman Forum. Completed in AD 113, the freestanding column is most famous for its spiral bas relief, which artistically describes the epic wars between the Romans and Dacians. Its design has inspired numerous victory columns, both ancient and modern.

more on https://en.wikipedia.org/wiki/Trajan's_Forum and https://en.wikipedia.org/wiki/Trajan's_Column