A submerged archeological park still holds the wonders of a Roman Sodom.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A kaleidoscopic warehouse-maze of handmade neon signs.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

The dramatic upward-curving roof is one of the most iconic examples of Googie architecture that still stands today.

A tribute to the movie stars who fought to keep Beverly Hills separate from Los Angeles.

The programmatic glory of LA's giant whiskey barrel building has become an upscale reminder of the city's kitschy roadside past.

A look into the Church of Scientology's deeply unfavorable view of psychiatry.

Once strictly off-limits, this lower level housing curious and priceless vehicles of the Petersen Automotive Museum is now open to the public.

This traditional garden in the San Fernando Valley doubled for Star Fleet Academy, and is irrigated entirely by wastewater.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Hidden in the hills of Hollywood, this secluded Oz-themed garden is dotted with dozens of thrones.

America's most famous piece of self-built architecture.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

Of course Salvador Dalí lived in a castle...

Beautiful steampunk ghosts of early Massachusetts.

The headquarters in Salem doubles as an occult art gallery.

This museum-within-a-museum pays tribute to "The World's Most Experienced Airline."

An abandoned Gold Coast-era mansion once intended for the exiled ruler of Albania, who never arrived.