Neighborhood: Midtown East
Address: 87 East 42nd St.
The Grand Central Terminal is not a mere transportation hub. It's like stepping inside a time capsule. The depressing terminal that is Penn Station doesn't hold a candle to this functional art piece. From the constellation-cloaked ceiling to the monstrous gold-plated clock, the building's architecture is trumped only by the unmatched people watching. Actually, it's a three-way tie between gawking at strangers, the fully stocked specialty food market (home to that wild, upside down crystal tree sculpture), and the whispering walls. If you don't know, now you know.