Adam Hart-Davis rediscovers the innovations and inventions brought by the Romans to Britain. In this edition, he examines the forms of entertainment laid on during the 176 days per year that were public holidays in Roman times. Featuring the hydraulis, the first ever keyboard instrument. Plus a look at how the Romans introduced concrete.

Hart-Davis visits Hadrian's Wall and demonstrates how communications were the key to the success of the Roman military machine.

Hart-Davis analyses the Romans' ingenious surveying methods that enabled them to build their arrow-straight roads. He also commisions a replica of an ingenious giant water wheel used to remove water from flooded Welsh gold mines.

Hart-Davis analyses the Romans' ingenious farming methods and looks at the creation of early towns. He visits York and discovers the remains of the Roman city and a Roman sewer that is still working.

When the Roman army invaded Britain in force in the spring of AD 43, they brought with them technology that must have astonished the native Celts. To begin with the Roman weapons were far better - they had good swords, spears, and several machines to throw missiles.

Hart-Davis investigates the lavish lifestyles of the Romans, visiting the sumptuous villa at Fishbourne, West Sussex, the famous bath complex in Bath and enjoying Roman cuisine.