Columbus Circle
This underground little piece of heaven has a salad bar and prepared food section that rarely disappoints. It does tend to get pretty backed up during lunch hours though, thanks to the hoards of editors traipsing the few blocks over from Hearst. Definitely explains the better-than-usual magazine selection.
The dining area is also pretty packed / grim. But with Central Park across the street, you're more than fine.
[Photo via @bjsmerchandising]