A bronze plaque marks the site of the only show the "King of the Soul Singers" ever missed.

This striking art museum holds an amazing series of curiosity cabinets.

A bypass decorated with large wooden troll carvings.

A largely forgotten and touching neoclassical marble fountain overlooking a bear mound effigy.

The arboretum whose marshy soil sucked up the dreams of housing developers.

This forgotten beach house built to look like a Frank Lloyd Wright masterpiece overlooks a hidden beach.

A museum of the dime museum that features weird entertainments of yesteryear, from feejee mermaids to flea circuses.

A place to eat for on-the-run agents and espionage enthusiasts.

One of the largest aviation events in the world brings half a million aircraft enthusiasts to Wisconsin each year.

One of the last surviving C-97s sits in a field in front of a Wisconsin inn.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

More than 5,000 contemporary and "historic" mustards from around the world.

A theme park attraction designed to turn your children into LARPers.

Wisconsin's most celebrated export gets the royal treatment on I-94.

This cave holds a surprisingly colorful variety of geological oddities.

Robots, lasers, and whoopee cushions, oh my!

A stone marker memorializes the spot where the King broke up a street fight with a classic karate stance.

Hidden away in the city of Madison, Wisconsin is a nearly forgotten home that Frank Lloyd Wright built for a childhood friend.