The unusual patterns in this rock formation result from two distinct modes of weathering.

A small oasis not far from downtown Moab.

A tunnel with windows, so you don't miss out on the impressive views.

The fifth-longest natural arch in the world, and the longest outside China.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

An unusual bed & breakfast made of papercrete.

Minimalist modern art on a repurposed military base in rural Texas.

A Prada store in the West Texas desert that is never open for business.

America's only nuclear missile silo open to the public.

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

Dramatic river bend surrounds a natural red-rocked pedestal.

Most-visited and most-photographed slot canyon in the American Southwest.

This stately clubhouse has showcased German-American culture for over a century.

The historic home still shows the scars from a little run-in with the British in 1813.

WWII-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers. .

A large visitor's complex and place of remembrance on the outskirts of the DMZ.

Secret North Korean passage discovered below the world's most dangerous border.

A modest reminder of treacherous waters at the Golden Gate.

The celebrated eyesore created by starry-eyed sweethearts.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This demon atop the Notre-Dame de Paris looks utterly bored.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.