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!
Death & Co is my favorite place for delicious cocktails and small bites. Their truffle mac and cheese and lobster rolls are delicious and love just about every drink on their whisky menu.
Taco Chulo is a great Mexican restaurant that has a good selection of tacos and burritos and of course has interesting blends of margaritas. I probably eat here at least once every other week.
My favorite Japanese restaurant in NY...Small and cozy place, the staff is great, the food always simple and delicious, the uni shots are addictive and the sake perfect.