1. Roman Architecture Examples of Roman use of concrete and brick

2. Pozzolana sand and lime paste to make Roman concrete

4. Roman Aqueducts Pont Du Gard near Nimes, France

5. Pont Du GardTop of Pont du Gard

6. Pantheon Pantheon exterior

8. Colosseum official name Flavian Ampitheatre The Colloseum, the house of death was the largest amphitheatre in the Roman world. It was built by the Flavian dynasty of emperors upon the remains of Nero’s private lake. The colloseum covered six acres and stood 160 feet high. The building could seat 50,000 and hold 80,000 with standing room. Beneath its wooden floor there were a mile of tunnels, ramps and lifts to bring entertainments on stage. At its opening the Emperor Titus held games for 100 straight days and bragged of the 9,000 animals killed. Trajan held 120 days of games. The games were played in the Colloseum for over 400 years.