The abandoned mine where American troops discovered a treasure trove of art and artifacts hidden by the Nazis.

A historic neighborhood church is reborn as a psychedelic arts collective.

Inside this Krakow church, an explosion of psychedelic color.

Hideout of thieves, monks, and goat-footed gods.

During World War II, Austria's oldest salt mine was used to store thousands of pieces of stolen artwork.

The world's largest collection of witchcraft regalia.

During World War II, a number of important sculptures and paintings were moved to this castle for safekeeping.

Once home to some 250,000 volumes and priceless art artifacts, this Polish estate was a target of bombing during World War II.

A terrific purveyor of natural history objects and curios.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Why settle for barbecue chips when you can get actual barbecue?

Slaughterhouse Five opens its dank doors to fans of Kurt Vonnegut.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

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

An essential stop before plundering, BYO Cutlass.

A huge musical instrument played by the ocean.

An invitation-only museum of items natural and bizarre, arcane and exotic.

Visible below the waves are memorials to the city's Gold Rush dead.

A psychedelic labyrinth on the San Francisco bay.

This residential door allows San Francisco muggles a glimpse at the wizarding world.

Tiki luxury on Nob Hill.

Step into Monet's world at this fine-dining restaurant in the middle of a New Jersey sculpture park.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.