Founded in 1965, Subway is one of the largest submarine sandwich chains in the world. It offers a variety of subs, salads, along with sides in categories, including classics, selects, premium, breakfast, kids meals and catering. Located in Birmingham, Ala., Subway a registered trademark of Doctors Associates Inc. operates 35,178 restaurants in 98 countries. Entrepreneur magazine has ranked the restaurant chain as the No. 1 Franchise opportunity as well as the No. 1 Global Franchise opportunity for 2010, in its annual Franchise 500 rankings.