This supper-club-turned-concert-venue still serves drinks at its original rotating bar.

A forgotten Cold War relic hidden in the outskirts of a Wisconsin city.

In 1859, the Virgin Mary supposedly appeared in this small town.

Housed inside a former munitions plant that was once one of the largest in the country.

This was once the largest four-sided clock in the world (yes, even bigger than Big Ben).

Life-size statues of characters from 'The Wizard of Oz' stand at the one of the early screening sites for the 1939 movie.

A renowned Civil War veteran, this Bald eagle now presides over the Wisconsin State Assembly.

These rural ruins are of a Midwestern hotel that was once an elegant spa for the wealthy, then a gangster’s hideaway, and finally a haunted retreat.

Exhibits from an island in Lake Michigan are preserved in this hand-built cabin museum.

A factory in Milwaukee where poop is reclaimed… and recycled.

Built in France in the 1400s, this gothic chapel now resides at Marquette University in Milwaukee, Wisconsin.

Picturesque and haunting, these 160-year-old stone ruins on top of a bluff are the only remains of a settler's legacy.

Prayers and messages of hope decorate the ceramic tiles of this pavilion.

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

The oldest continuously-operating tavern in Wisconsin used a clever loophole to serve alcohol during Prohibition.

Whimsical sculptures dot a woodland path surrounding their creator's old summer cottage.

The spaceship-like theater, which is still in use, was one of the most popular exhibits at the 1964 New York World's Fair.

A remnant of the last Ice Age, this lake is surrounded by fascinating rock formations.

This quirky museum has a collection of more than 15,000 bobblehead dolls.

A circus of light and sound forms a sensory ode to an iconic train that will never pass through town again.

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

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

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