This large midwestern cavern features impressive rock formations and an underground waterfall.

Just a man taking his prehistoric pet for a stroll.

A fitting attraction for the corn capital of the world.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

The oldest continuously-operating Chinese restaurant in the United States has been in business since 1911.

New fungal and bacterial species call this deadly lake home.

A house filled to the brim with oddities and curiosities.

This unique Seattle structure was designed to be the greenest commercial building on the planet.

What's a diner from the 1939 World's Fair doing in a remote Utah mountain town?

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

A devilishly named gorge that was a sign of salvation for many pioneers.

This Wyoming town is fascinated by a particular mythical creature.

A unique attraction and museum dedicated to exploring iconic roadside structures.

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

Covered in tens of thousands of coats of paint, this Indiana attraction holds a world record all its own.

A rural hall of justice holds the world's only comic book and superhero museum.

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

Deep scars on the earth left by the Ice Age.

Take a drunken tour inside the world's largest known geode.

This NASA test station is home to some of the world’s largest and most powerful space environment simulation facilities.

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