Wisconsin loves Germans, and Germans love mustard, so a Mustard Museum in Wisconsin is a match made in heaven. The founder, Barry Levenson, just decided to start collecting mustard one day in the 1980s, and has now developed a collection of 5,624 mustards from all 50 states and over 70 countries for visitors to gaze at. There's also mustard ads, antique mustard pots, mustard mascots, and of course, a gift shop where you can buy a million kinds of mustard and Wisconsin-themed gifts.
Coulrophobes, steer clear: the Clown Hall of Fame will be the stuff of nightmares for you. For those of us who find clowns a little weird but benign, this is a unique little stop near the Wisconsin Dells. Part museum and part archives, it's where you'll find everything there is to know about historical clowns. It's open by appointment only, however, so call ahead.