Its the towns central market. People go here to buy meat, vegetables, cheeses spices and etc . Also during the hot month you can pass through for the shade its offers. There are some traditional restaurants inside.
A lot about travelling is to understand the culture of the place so what better place than to go to a market. You can sample some of the stuff there before you buy it. You can also have a traditional meal from early morning till noon.
Locals after a night out go there to eat some soup usually. Tripe soup is said to be the best before hangover cure