Spoonbill and Sugartown Booksellers is in a pretty visible spot at 218 Bedford Avenue in the Williamsburg neighborhood. I still can’t help but point it out as one of my favorite places to check out books, especially arts related publications. Needless to say its an easy place to stop by with plenty of things to see in the immediate area.
Coney Island is the best for everything - the beach, the rides, the beer - but mostly for the Skee Ball. It's incredibly addicting, affordable and satisfying (depending on your aim).
The Frank Stella's are the best. They are all over the city and they always look amazing. Two of my favorites are the Saatchi and Saatchi lobby (pictured) and the Citi Corp building in Midtown.
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.