A Chicago-style dog is a steamed beef hot dog with yellow mustard, bright green relish, onions, tomato wedges, pickles, sport peppers and a dash of celery salt, served in a steamed poppy seed bun. En savoir plus .
At 110 stories high, the Willis Tower is the tallest building in the United States and the fifth-tallest freestanding structure in the world. En savoir plus .
