An ornate Art Deco tile mosaic representing Nebraskan life, both modern and prehistoric.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

A monument marks the location of the first successful steamboat demonstration.

America's post-nuclear-attack chambers of Congress.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.

Take a steam-powered ride straight out of the past on this Appalachian rail line.

This rural community has attracted both scientists and techno-refugees due to its federally-mandated lack of technology.

The world's largest fully steerable radio telescope.

One of the last few period-correct, hand-operated canal locks in the country.

An office built to look like a giant basket.

An abandoned relic of the city's failed experiment with below ground transit.

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

This Mediterranean castle was built for a millionaire and his giant dog.

An art deco ice cream shop covered in vintage tiles.

The original vault that held the president's remains still stands, empty, not far from where he was finally buried.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

The only diamond mine in the world where you can keep what you find.

This abandoned prison castle has become an imposing gallery of graffiti art.

Undone by Prohibition, this abandoned brewery-turned-flour mill is now ready for its third act.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

This recently restored timepiece has stood all around Kansas City.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

This erect, phallic geological spire wasn't always named so domestically.