1. Penn Station | New York, NY
This historic station sits under Madison Square Garden and boasts 21 tracks and seven tunnels. The “Penn” stands for Pennsylvania Railroad, and the destruction of its original 1910 Beaux Arts station in 1963 was a crime—today’s station maintains the same rail infrastructure but is now a low-ceilinged subterranean space without the lofty glass and steel of its predecessor. If you want pretty, check across the street for the Moynihan Train Hall which expanded Penn’s reach, but if you want an expeditious station: this is it!
Passengers: 8,008,700