The colosseum was actually built over Nero’s famous golden house and takes its name from the Colossus statue he erected of himself, as tall as the colosseum, shown in the first photo below.
The statistics for the colosseum are amazing to consider:
Pictured in the fourth and fifth photos is the under structure of the colosseum showing how animals were brought up from beneath. This the floor of the colosseum was composed of boards supported by cement pillars covered with sand to absorb the blood.
The morning events of the colosseum centered around hunting animals. Then at lunch criminals were brought into the arena for punishment.