The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Less a museum than a bizarre fantasy world created by artists and engineers.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

This modest post office sits on the site of H.H. Holmes' famous murder castle.

This rooftop sign has been confusing Milwaukee-bound airline passengers for decades.

A wonderfully curated used bookstore in an airport.

This massive marble memorial was built bit by bit either out of devotion or spite, but at the expense of the surrounding town.

Where the author wrote her beloved "Little House" books.

A bedazzled house and crown "jewel" of outsider artist Loy Allen Bowlin.

A museum celebrating the self-taught artist-environment builder.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

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

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

Statue dedicated to the star of an old television show.

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

According to the legend, this strikingly beautiful hill has miraculous healing powers.

The building was originally a gas station built to resemble a Japanese tea house.

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

The Bong-area park police have asked visitors to please, stop stealing the signs.

Three playfully immersive mini golf courses let you travel alongside your ball to the cup at this facility, which has been around since the 1950s.

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

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