The Colosseum does not have an original shape, it is ovoid, that is to say almost oval, and it consists only of a central arena and steps in amphitheater, all surrounded by an impressive facade but alas largely gone. However this very simple description masks a certain complexity in the plan of this monument, genius of the Roman know-how as regards the architecture.
To understand this, here is a 3D infographic of the Colosseum:
Colosseum Diagram
Colosseum Diagram
Reconstitution of the Colosseum by computer
Colosseum Diagram
Colosseum Diagram
Reconstitution of the Colosseum by computer
Colosseum Diagram
Colosseum Diagram
Reconstitution of the Colosseum by computer
Sectional plan
Here is a sectional plan of the Colosseum, which allows to see the different existing corridors, as well as the 4 occupation areas of the stands: At the bottom, the senators, above, the free men, in the 3rd sector, the rest of the population and finally at the top the women and the people.
