It's safe—and permitted—to walk across these twin natural sandstone arches.

California's largest steel arch bridge.

This World War II-era bunker is now packed with posters and props from movies and TV shows filmed nearby.

Part of this hotel resides in Switzerland, the other in France, and the border splits the honeymoon suite.

The immortal Hollywood star rests in peace in an unassuming Swiss village cemetery.

This secret Swiss fortress is disguised as a harmless pink house, complete with fake windows.

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

This lone survivor of a regional franchise still slings delicious burgers and colossal servings of fries.

This sparsely populated town offers a look back in time.

Home to New Mexico's longest bar, this watering hole also has a mining museum and a haunted history.

In a largely deserted ghost town, a little brick building recalls its history as a gold rush hub and haven for outlaws.

The oldest active juke joint in the state sustains a niche school of blues guitar.

A Texas landowner spelled out his name with three miles of trees, a giant signature that's been used by NASA to evaluate satellite imagery.

The first railway tunnel to cross the Continental Divide and, at 11,523 feet, was once the highest railroad tunnel in the world.

The Iowa state contender for largest pan in the world oddly only comes in second or so.

This shop for all your super spy needs hides an educational secret.

The beloved dining spot stands at the cross-section of Hollywood and the Old West.

A monument to the art of slicing people open.

A renovated hotel is bringing new life to a nearly-abandoned mining town in Colorado.

This collection of odd proofs of concept is like taking a walk through the imagination of a Victorian engineer.

Ivy-covered Medieval tunnels cut through this charming town in France's Loire Valley.

This permanent exhibition celebrates the finest of our heartless automatons both real and fictional.

A 2017 crowdfunding campaign saved this historic castle from being destroyed.

The largest lake in the Faroe Islands seems to be held hundreds of feet above sea level thanks to an optical illusion.