The prototype for all Nazi concentration camps.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

Shoreline strewn with the remains of ghostly fallen trees.

The narrowest street in Canada was once a spot for dastardly doings, now a historic piece of Chinatown.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

The famous boat that once ferried Bogart and Hepburn still floats in Key Largo after being abandoned for years.

The museum chronicling a treasure hunter's dream, fulfilled.

A historic presidential getaway on the continental United States' southernmost island.

A monument celebrating the idea of reaching inaccessible places.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Even in death, he's still your huckleberry.

At 207 feet, one of the world's longest continuous escalators.

Portlandia is the second-largest copper repoussé statue in the United States.

The magic's in the hole!

A museum dedicated to the history and exploration of both popular music and science fiction.

A massive sea stack famous for its appearance in The Goonies.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.