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

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

A unique botanical garden housed in three giant geodesic domes.

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

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

What appears to be a wizard's lair in Milwaukee actually houses a massive water pipe.

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

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

This small-town opera house has appeared much more in national culture and history than its charming setting might suggest.

At the largest railway museum in the United States, you can see everything from an early steam engine to a functioning Thomas the Tank Engine.

The tunnel that runs beneath this former inn was once a hiding place for enslaved people seeking freedom.

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

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

Where experiments are conducted on all things wood.

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.

Home with Gothic windows featured in a famous painting.

An unlikely Transcendental Meditation haven in the American Heartland built around the ancient Vedic principles of balance and harmony.

This giant crucifix is like U2's Joshua Tree for Swedish death metal fans.

The world's largest model of our planetary system.

The scars of a remarkably organized public protest to save 13 elm trees are still visible in this Stockholm park.

Sweden's "good old days" painstakingly re-created in a model village.

It houses the remains of a 17th-century version of the Titanic.

Sweden's oldest animated sign is still lighting up the skyline today.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.