In operation since 1969, Wendy's is one of the leading chains of fast-food service restaurants in the world. Located in Plainfield, Ill., the food-service firm operates more than 6,600 restaurants throughout the world. The restaurant serves a number of food items, including vegetarian burgers, hamburgers, salads, beverages, desserts and combos. Its special food items include old-fashioned combos/hamburgers, spicy chicken sandwich/nuggets and crispy chicken deluxe. Wendy's is a part of Arby's Group Inc., one of the largest quick-service restaurant companies in the United States.