Ah, Subway—one of the best places to grab a quick lunch while still eating fresh and healthy. Even if you’re a huge fan of their footlongs and cookies, there are probably a few things you never knew about this fast-food joint. Here are 9 fun facts about this sandwich-loving chain:

1. Subway was founded in 1965 by a 17-year-old named Fred DeLuca who used a mere $1,000 loan from a friend to get started.
2. The chain churns out about 5,300 sandwiches every minute—roughly 320,000 sandwiches every hour.
3. Before they were known as the 6-inch subs, they were caked “The Snaks.”
4. Subway didn’t start toasting their sandwiches until 2005.
5. Subway is the largest chain in the world—yep, even bigger than McDonald’s.
6. There’s a little-known secret menu with items like chicken cordon bleu, tuna melt and more. Ask about it.
7. In 2015, Subway set the Guinness World Record for “Most people making sandwiches simultaneously” with 1,481 people, at its annual convention in Las Vegas.
8. When it rains in Southern California, participating stores offer free 6-inch subs and hot soups (with the purchase of a 6-inch sub and large drink) for free.
9. There are a total of 37 million different combinations available for sandwiches.

Did you know any of these fun facts about Subway?