Deserted Home Escape

The market was in its peak hour and there were busy people all over the place. You being a new person to the market were looking for things that you would want to buy as well as looking at the people with a lot of curiosity. Suddenly an explosion took place in the middle of the market and everyone disappeared from the scene as if it was a usual occurrence there and they all knew where to hide. You rushed inside the big building that was a just a bit far from the market. After few hours you assumed that it was safe to come out but unfortunately you just could not figure out the exit. You must find that exit.