Chicago is home to the Golden Anniversary Celebration McDonald's. Essentially a huge McDonald's built to celebrate their 50 year anniversary.
I was told they had an exhibition upstairs of every toy they'd ever given out with a Happy Meal. This isn't correct, but they do a have an interesting display of memorabilia through the ages. I'm no McDonald's fan, but there's some fascinating stuff here.
There are some pretty funky arches on that cup.
I wonder how many they've sold now?
I bet that Rubik's Cube is worth a few coins now. More pictures, inevitably, on Flickr.