An abandoned gun-funded 19th century utopia.

An iconic steel and chrome diner from the 1940s left empty for nearly 20 years is in danger of being demolished.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

Two graffiti towers stand like ghosts of Vancouver's World War II-era defensive outpost.

Locals transformed this Canadian evergreen into a secret hangout with spectacular views of Vancouver's skyline.

Only museum in the world devoted to bookbinding and book arts holds a permanent collection representing five centuries.

This recently restored crypt was once plagued by liquefying coffins and exploding caskets.

100-windowed castle turned art gallery, built by one dedicated mason.

The house where the writer spent his formative years.

Though they've since been renamed, these two streets hint at Dublin's darker days.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

A verdant 17th-century-style garden hidden along Edinburgh’s Royal Mile.

This architectural oddity is an oasis of green on the outskirts of Valencia.

An old department store turned Nazi prison turned artist commune.

The abandoned remains of this Victorian brewery hide crumbling bowling alleys and rusting industrial gear.

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

An eerie, derelict amusement park in Berlin.

These Victorian era devil sculptures were designed to spite a local vicar.

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

The television series' iconic giant foot was borrowed from this classical painting.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

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