What was life like before we ever uttered the words "Big Mac" or "supersize it"?

McDonald's, the largest fast-food chain in the world, has been around for over 60 years. During that time, much has changed at the restaurant.

What started out as a small barbecue shack serving 15-cent burgers has now become a global empire making billions of dollars each year. Everything from the packaging to the menu has evolved over the years, and the differences between McDonald's restaurants years ago and today may surprise you.

Here's how McDonald's has changed since its beginnings in the 1940s.