Logos from McDonalds, Burger King and Subway side-by-side

This Is the World’s Biggest Restaurant Chain (Psst: It’s not McDonald’s!)

In 1965, 17-year-old Fred DeLuca borrowed $1,000 from Peter Buck to form Pete's Super Submarines. Never heard of it? The restaurant in Bridgeport, Connecticut, now goes by the more succinct "Subway," along with the 40,000-plus other locations worldwide.