There’s an excellent video game museum in St. Louis. It was really awesome to play all those early 80’s stand-ups like Tempest, Robotron, Joust, Donkey Kong and so on . There is also a pretty cool aeronautics/space exploration museum (something like that anyway, I know there’s lots of flying stuff). Other than that they have excellent Vietnamese restaurants, so if you’re a fan of spicy Asian food don’t leave without visiting one – best Asian food I’ve ever had.