Today Subway is one of the world’s biggest fast food chains, but it all started in 1965, when 17-year-old Fred DeLuca needed to save up for medical school. Dr. Peter Buck, a family friend and nuclear physicist, lent him $1,000 to start a business, and Pete’s Super Submarines opened in Bridgeport, Connecticut. The idea was to provide a healthier, more affordable alternative to the traditional fast food options available at the time. In 1968, the duo rebranded the restaurant to Subway, which was simpler and more marketable, and by 1974, they had opened 16 outlets in Connecticut.