I am going to the good ol' US of A in January (pre-Trump) with my gf, and was hoping for some tourism advice. We will be in New York for 4 days, and Washington for 2 days. We have a few things that we definitely want to do (MOMA, Intrepid Museum, 9/11 Memorial, National Air and Space Museum) but would welcome advice on what else is worth doing and what's not. We would like to go to the top of a tall building - we were thinking either the World Trade Centre or the Empire State Building. Any advice on which will be better? Or is there another option we haven't considered? We like Art Deco and Art Nouveau architechture. Obviously there are a whole bunch of building exteriors we can see, but are there any stunning interiors we should seek out? I hear that the Radio City Music Hall is good, but I'm unsure whether you can get in without shelling out $40 each for the official tour. Any unmissable museums or galleries? Any tips for getting super cheap tickets to sports matches? We are staying just across from Madison Square Gardens and I looked at tickets to the basketball and ice hockey games that are one while we are in NY, but the seats were $150 each, which is probably about $120 more than I want to pay to watch a sport that I don't actually follow. Where should we go for jazz music and cocktails? Which deli should we go to and what sandwhich should I order? Where is the best pizza? Where is the best cheesecake? Most importantly, where is the best bass shop?