I grabbed lunch at Cibo Bistro and Wine Bar in Philadelphia.  I ordered
the house salad, which came topped with apple, zucchini, and tomato, and
dressed with balsamic vinaigrette.  It's one of the best salads I've had
in an airport.  (I eat them relatively often when flying, a kind of
counter to the unhealthy snack food one gets served on planes.)  The
salad was actually a bet--the cafe didn't have any salads on display, so
I couldn't evaluate their appearance.  Rather, I figured the cafe looked
fancy enough (and expensive enough) that it ought to have good salads,
so I ordered one.