Also in case of Forum of Cesare the heart of the complex, 160 metres long and 75 metres large, is a rectangular square surrounded by colonnades inaugurated on September 26^th 46 before Christ.

On one side was placed the temple of Venus Mother, which was keeping precious art works such as the Venus of Arkesilaos, the paintings of Timomaco di Bisanzio, the collections of precious stones incised "dactylothecae" and a gold statue of Cleopatra. Afterwards, the imperator Traiano ordered the building of the Basilica Argentaria in the south-occidental area of the arcades, dedicated first to be a market of the dishes in bronze and then, in the late antique time, probably a school.