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

A unique botanical garden housed in three giant geodesic domes.

This whimsical sculpture garden is a local treasure.

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

The world's largest talking cow would like to tell you about the benefits of 100% Wisconsin dairy products, if only she still could.

Comprised of Spanish war cannons, this sculpture once graced the bow of a WWI warship.

The only Native American intaglio left in Wisconsin.

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

A restaurant and lodge in northern Wisconsin which served as a clandestine hideout for John Dillinger and featured one of the most famous botched FBI raids in history.

A hidden gem that highlights the life and innovations of Les Paul, the "Wizard of Waukesha."

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

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.

The tragic death of 19-year-old Mabel Tainter in 1886 led to the construction of this unique Victorian-era theater in the northern woods of Wisconsin.

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

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

These modest Midwestern formations are kin to Niagara Falls' impressive cliffs, more than 600 miles away.

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

The site of an ancient Mississippian settlement that appears to have flourished during the 10th to 13th centuries.

A museum devoted to the victims and the survivors of the most catastrophic fire in American history.

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

Small-town museum dedicated to outer space ... and bicycles.

Walk up a ramp through a forest for panoramic views of Lake Michigan.

The preserved remains of the former Milwaukee County Hospital for the Insane are hidden in the wooded grounds of County Park.

This unique zoo is the only place in the world where you can see all 15 species of crane.