This is Le Palais de Sport (AKA Coupole el Menzah).
The management have retained the services of a cat to control the vermin, it is great with rats and mice, but has yet to learn the basics of cat-powered flight so the local starlings have the roof to themselves.
There are 4,190 seats. One woman (centre right below) is responsible for cleaning them. It is a real shit job.