Once a speakeasy operated by Al Capone, this Milwaukee cigar bar is now a haven for ghost hunters.

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

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

This shallow cave got its name from copious amount of human bones found inside.

Strange physical sensations and optical contradictions keep visitors coming back for more.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

During WWII the U.S. Navy conducted primitive drone strikes on this Lake Michigan lighthouse.

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

Statue dedicated to the star of an old television show.

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

One of Frank Lloyd Wright's final works was this UFO church.

The oldest certified bowling alley in the United States is in the basement of this century-old bar.

A statue honors the genius who allegedly first took a meatball and made it into a hamburger.

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

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

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

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

A hundred-year-old museum filled with giant physics toys and experiments designed by grad students.

"Looks so real, it's scary!"