Did you know there's a "secret" Track 61 train station on Manhattan? That the game of pinball was actually banned in the city at one time? Harlem is up, and the Battery is down -- and, always remember this: if the street numbers are going up, like 42nd St. to 43rd to 44th Street, then you're headed north. (Numbers going down? Turn around.) Oh, and "PONY," if you see it around, means Product of New York.