Dragan Radovanovic/Business Insider

Have you been assuming "Star Wars: The Force Awakens" or "Avatar" must be the biggest movie ever?

You'd be surprised. When adjusted for inflation to even the playing field, the top-earning films at the US box office include many old classics, from overall winner "Gone with the Wind" to a couple Steven Spielberg favorites and a Disney animation. Oh, and the original "Star Wars."

Check out the biggest blockbusters at the box office in the chart above, which uses data from Box Office Mojo.