Free Online HD on Lookmovie. How did the Romans produce some of the most impressive gladiatorial games ever seen in Europe? How did the Colosseums mysterious roof really work? And how does the mighty Colosseum compare to the popular sports venues of the 21st century? Structural engineer Steve Burrows and his team of laser-scanning experts head to Rome on a quest to answer these questions and uncover some of the oldest mysteries of the ancient stadium.