DB Bistro Moderne, New York, N.Y.

In 2001, celebrity chef Daniel Boulud arguably kickstarted the luxury hamburger trend with a $27 burger stuffed with short ribs, foie gras and truffles at his DB Bistro Moderne in New York. These days, the same sandwich goes for $32, and comes with black truffle and vegetable mirepoix on a parmesan roll topped with lettuce, tomato, horseradish mayonnaise and tomato confit. But that's not even the most expensive burger on the menu. For $150, guests can experience the DB Burger Double Truffle, layered with a staggering 20 grams of shaved black truffles.