Ray Kroc first opened for business there on April 15, 1955. But today it is simply a museum. It is open only for a limited time during the summer, but you can look at it from the street any day of the year. While there is a technicality that the 'first' McDonald's was in southern California, this is the location of the first franchised restaurant.
Inside, there are original kitchen appliances, furnishings and even a few wax sales boys in the original vintage uniforms.
If you come here to actually get food, you will have to walk across the street to the current and functional McDonald's. Inside, there are a few glass case displays that have more memorabilia from the 50's era.
Hours are only ~10am to ~2:30pm
Thursday, Friday & Saturday
Memorial Day - Labor Day
(you may call to set an appointment/tour outside of these hours)
I didn't get a chance to see a movie there, but the Des Plaines Theater (the only movie theater in Des Plaines, from what I can see) runs Indian-language movies exclusively. It seems an unlikely place since I didn't notice evidence of a particularly large Indian population (or large minority populations of any kind, for that matter). Wish I could have got in to see what the concessions were...