One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

This funeral home had the honor, if that is the correct word, of hosting the funeral of the famous Sacco and Vanzetti.

Unrepaired walls from a 1920 anarchist bomb attack.

Detroit housing collective working to create an "environment for revolutionary change."

Home to a protest movement, a bombing, and a dramatic change in labor history.

Stalin's secret bunker.

This naturally-sourced hot spring is now home to a clothing-optional resort.

Dig for your own trilobites in this goldmine of invertebrates.

Learn about Iceland's hidden folk at this school dedicated to the study of elves.

Huge hole looks down onto an underground beach populated with sea lions.

The temple that withstood the Nazis.

A solar-powered primary school inspires hope and experimentation in a country ripe for energy innovation.

A forgotten monument to Yugoslavian freedom.

This stunning, out-of-the-way Croatian monument commemorates a community's uprising against occupying fascist forces.

The folks at the Devil's Rope Museum want you to get hooked on barbed wire history.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

Cockroach Museum features roach celebrities and live hissing cockroaches.

A modernist landscape of water and sci-fi concrete.

Decaying military base deactivated in the 70s is now visited by urban explorers and military enthusiasts.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

A pair of giant legs paying homage to a poem, a king, and it would seem, socks.

The top of a giant mesa, just outside of Amarillo, appears to float in the sky above.

The only nuclear weapon assembly and disassembly plant in the U.S.