Amazing to think that 80,000 people could enter this within 20 minutes. All the women were segregated from the men and lower classes sat in the upper seats. Emperors and statesmen sat in boxes- as we do today.It is almost 50 meters high and more than 10,000 cubic meters of Travertine was used too build it.Right by the side of the structure stood a huge statue of Colossus, it stood 30m high.