Final answer:
The Markets of Trajan in Rome, Italy were made out of brick and concrete. The exterior of the markets was faced with Travertine stone and marble. The facade of the complex had a semi-circular shape with a round arcade, while the interior featured barrel vaulted ceilings.
Step-by-step explanation:
The Markets of Trajan in Rome, Italy were made out of brick and concrete. The exterior of the markets was faced with Travertine stone and marble. The facade of the complex had a semi-circular shape with a round arcade, while the interior featured barrel vaulted ceilings.