Founded in 1965, the Subway restaurant chain is one of the largest submarine sandwich franchises in the world. Located in Castro Valley, Calif., it is spread across nearly 30,000 locations in 87 countries, such as Germany, China and Turkey. The store operates as one of the largest restaurant chains of fast and healthy food in the world. Some of its products include the big philly cheesesteak, chicken/bacon ranch and veggie delite. Entrepreneur magazine named Subway the number one global franchise opportunity in its Annual Franchise 500 ranking for 2008.