Polo Bar is the immaculate, wood-paneled, leather-trimmed, equestrian-focused world of Ralph Lauren in restaurant form. Scoring a reservation (even a 5:30 p.m. one) at this subterranean spot is a challenge, but if you can get in, it's worth it. The first-floor bar is only open to dinner guests, so forget popping in for an impromptu martini. As for what to order: the steaks, burgers, and popover starters are all solid options (the menu is made up of the renowned designer’s personal favorites). There’s a strict dress code at this celebrity hotspot—men are encouraged to wear jackets— so be sure to dress to impress.