COMFORTABLE SNEAKERS Even in the cold, you won’t be able to resist exploring the city on foot, so you’ll need uber-comfortable shoes. (New Yorkers know this: heels are carried in bags, and Nike FlyKnits are on the feet.) A WARM JACKET Let’s not mess around here: New York gets seriously cold. A HANDY SUBWAY MAP Download a good map app on your smartphone to help you navigate the often confusing subway system. The city that never sleeps? Oh yeah. I could go on. But best you pick a date, pack a bag, and discover it for yourself.