The best part of the new Whitney Museum is the view in all directions from the terrace - and also from the staircase facing West. I'm afraid it upstages the Art.
Grand Central is big and beautiful and it also periodically hosts free cultural events - poets at typewriters custom-composing poems on demand - or Alvin Ailey dancers performing in Artist, Nick Cave's horse suits!
Great shop for creative people seeking inspiration. Small indie arty book shop selling used and rare books & records. Sometimes there's art exhibitions in the back.
Its an image imprinted in everybody's mind: the background for hundreds of movies, ads and commercials. Actually standing on a saturday-night at Time Square, hearing dozens of different languages of tourists around you, and being fully emerged with the sounds and light, slightly frantic and crazy… You are in NY.