GCT’s art and style reflect the great economic success of railroad companies. before of car and air travel. You could spend years in Grand the growth tennis hidden before you all courts, its d cars, its private ground-floor apartment(now a bur). Nine stories below the lowest floor that the public gets to see is a basement known as M-42. Brucker explains, "This is not just the deepest and the biggest but the most secret basement in the city. During World War II, there were shoot. to kill orders if you showed up down here." It was where the power came from to move the trains carrying soldiers. Today, one box in the basement holds a small red button, about the size of a coin. Above it is written Emergency Stop." If you pressed this button, says Brucker, you could "make 125,000 people late for dinner.