The Colosseum is probably the most impressive building of the Roman Empire. Originally known as the Flavian Amphitheater, it was the largest building of the era.  While the Colosseum is largely in ruins it is still an amazing site to see.

The elliptical building is immense, measuring 188m by 156m and reaching a height of more than 48 meters.  The magnificent structure was clad in marble and 160 larger-than-life statues graced the arches on the upper floors.

The Colosseum could accommodate between 55,000 to 70,000 spectators who entered the building through no less than 80 entrances. Above the ground are four stories, the upper story contained seating for lower classes and women. The lowest story was reserved for prominent citizens. Below the ground were rooms with mechanical devices and cages containing wild animals. The cages could be hoisted, enabling the animals to appear in the middle of the arena.

The Colosseum was covered with an enormous awning known as the velarium. This protected the spectators from the sun. It was attached to large poles on top of the Colosseum and anchored to the ground by large ropes. A team of some 1,000 men was used to install the awning.