One of the world's earliest skyscrapers.

One of few surviving standpipe water towers in the U.S.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

This Wyoming town is fascinated by a particular mythical creature.

A small town built on an abandoned airfield has former runways as streets and a bar and grill in an old airplane hangar.

A haunting army of decomposing, moss-covered stuffed animals and dolls guard this swinging truss.

This lone tree and dramatic sandstone outcropping are so beloved by Michiganders they can be found on one of the state’s coins.

"The Most Boring Road in the State."

The watery grave of an impractical idea.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

This inanimate goat created by the "welding nun" has been helping to clean up the city of Spokane for more than 40 years.

The decorations were inspired by an unlikely missing treasure.

This playground sculpture of an icon from the past is dedicated to the children of the future.

The only road through the heart of Glacier National Park.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A theme park attraction designed to turn your children into LARPers.

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A Roman-style column in Oregon hides a spiral staircase inside.

A massive sea stack famous for its appearance in The Goonies.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

On the Oregon coast is a natural hole that seems to be draining the sea.