This is the underground subway station, home of the survivors. All of this is placeholder art. There are several options to choose from, depicted by actual objects in the scene. Basically this is the third iteration of this aspect of the game.
I'm a bit torn on adding story elements. Perhaps there will be a television or radio (optionally usable) that broadcasts the status of the rest of the city. Or, maybe the survivors will carry on brief conversations before or after missions.