The last civic building constructed in the ancient city, the basilica served as a law court and imperial reception hall. The building was begun in A.D. 308 by then emperor of Western Rome, Maxentius, and finished four years later under Constantine's rule.
The basilica's central nave—seen in its colorful splendor in the Rome Reborn simulation—was 265 feet (80 meters) long and 83 feet (25 meters) wide.