A very interesting visualization of a tenement house in ancient Rome, the so-called insula. Insula was the residence of ordinary Roman citizens, something like the present blocks. The tenement houses had several floors, and the walls had windows and doors overlooking the streets, which usually surrounded them on four sides.
As can be seen in the graphic, at ground level there were mainly commercial premises. The first floor was made up of the richer social classes, and the higher up, the worse and less comfortable conditions were. The top storeys looked more like makeshift cubicles than living quarters.