The Romans made many contributions to art and design, especially architecture. They copied Greek and Etruscan styles and advanced masonry techniques to create grand structures like the Colosseum, an amphitheater in Rome that could hold 50,000 people. Roman art also included painting scenes from everyday life and mythology, as well as sculptures that excelled at portraiture and narrative relief scenes. Coins and medallions produced by Romans provide valuable historical information through their iconography and inscriptions.