Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

The only surviving prototype for Buckminster Fuller's house of the future.

Largest magic museum in the United States with more than half a million pieces of memorabilia.

Astounding collection of coin-operated games and automata.

This freshwater spring fills with 10,000 gallons of water per minute.

The city is full of whimsical portals to another world.

A concrete block embedded with thousands of pulled teeth was created by a local dentist to memorialize his dog.

A large collection of motorbikes with some impressive gems.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

A wartime promise becomes a shrine to Our Lady of Lourdes.

You thought Santa Claus didn't exist, but it turns out you were wrong.

A lesser-known part of the Kinsey Institute is this impressive collection of art, artifacts, and material culture related to human sexuality.

One-layer pyramid in Indiana.

The only freestanding table rock formation east of the Mississippi.

Modeled after the labyrinth in Chartres Cathedral, this small-town Indiana memorial labyrinth sits half a world away.

One man's vision and a labor of love of many.

The first spinning jail built in the United States is the only one that still turns.

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

Ornate limestone building now filled with geologic specimens, and more.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

A medical facility that has been kept frozen in time.

The longest navigable underground river in the United States is home to countless blind and albino animals.

The center of the only hemisphere that awards visitors with a commemorative coin.

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