A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

When life gave this firefighter a forest fire, he made a rough-hewn sculpture park using a chainsaw.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

Deadly airliner crash preserved for those willing to climb and pay respects.

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

"I did this all while you were watching TV."

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A shrine built to combat the bad karma of a commercial venture.

This hidden stream beneath Indianapolis makes an appearance in the best-selling novel "Underground Airlines."

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.

A museum has some wedding cake dating to the Teddy Roosevelt administration, and some bacon from FDR's.

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

Monkeys lounge around at this 13th century temple.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The Grand Canyon of Texas.

An obsolete, vanishing traffic device warns Cincinnati drivers away from middle-of-the-road obstructions.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

Decades before the scandal, this staircase on the river was a literal "water gate."