The world's largest man-made underground caverns offer unparalleled underwater wonders.

First known as the "Sample House," this construction mash-up was meant to be a living catalogue of building styles.

Though it's thrived abroad, this forgotten Dunkin' rival has just one store left in the States.

During the 19th-century, this park was a vital trading fort.

This mosaic-covered bar is brimming with curated curios.

This ambitious restaurant celebrates the culinary traditions of the Ozarks before 1870.

Man-made geyser that rises to the exact height of the Gateway Arch.

One of the world's earliest skyscrapers.

Fantastic collection celebrating the final send-off.

In Houston's airport, a cow is properly equipped to jump over the moon.

In the late 1990s, a mechanic and fan bought this iconic sportscar back from the dead.

A park filled with vibrant mosaics created by more than 300 folk artists.

A taste of Middle Earth, in the middle of the Bayou City.

Beer lover's can-covered house.

A health museum containing a 27’’½-foot intestine.

The peaceful space is adorned by paintings by the famed abstract artist Mark Rothko.

At the "Garage Mahal" in Houston, car culture is about more than just driving.

Astounding collection of coin-operated games and automata.

Inside the Wayne County airport is an amazing collection of lights and sounds.

The world's largest commercially available hamburger is complete with 15 pounds of lettuce, 30 pounds of bacon, and 36 pounds of cheese.

Little did a museum know, they possessed the last-known lunch wagon in existence.

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

The world's oldest operating jazz club has been in operation since May 1934.

This historic Jewish cemetery sits right in the heart of a Detroit car factory.