Permanent exhibit reminds visitors of the Exxon Valdez.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

The labyrinthine home of the National Archives of Estonia is an experimental blend of architecture, art, and history.

This remote research station sits amid the second-largest ice sheet on the planet.

This elaborate estate contains a stunning marble aviary, a sunken conservatory, and a magnificent music room with a two-story pipe organ.

A beautiful oddities shop crammed with strange and morbid curiosities.

A Stalinist prison camp for the wives and children of men accused of betraying the Soviet state is now a memorial museum.

A hidden art gallery in an abandoned Warsaw fort.

An abandoned Ecuadorian prison that once held ex-presidents and notorious con artists is now a carceral museum.

America's first serial killer rests in anonymity.

A once-thriving hotel in the Swiss Alps couldn't compete with climate change.

An ever-growing literary collection housed in the apartment where the Russian author penned his final novel.

A real-life replica of a home from Hayao Miyazaki's beloved movie "My Neighbor Totoro."

The remains of a doomed Antarctic plane, buried beneath layers of ice and snow, await those willing to do a bit of digging.

Every summer local children form "pysja patrols" to save young birds that have wandered from their nests.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

The abandoned medieval theme park was meant to be the "Disneyland of the Philippines."

This palatial, 99-doored Colonial mansion is a marvel of architectural fusion.

Fascinating early attempt at a Jewish autonomous settlement.

The legacy of a Moroccan Jewish community is remembered at this little mouldering cemetery.

Catholics make up 84% of Ireland's population but this Dublin museum remembers the small but important Jewish community.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.