A model train wonderland hidden beneath Gare de l'Est station.

An aromatic exploration of the rich history and flavors of this German town's famous gingerbread.

A museum dedicated to telling lies in service of the truth.

See more than 150 sculptures, stained glass windows, and famous works of art all rendered in marzipan.

In the heart of Tirana, this underground nuclear bunker has been transformed into a museum.

In 1977, an eccentric book lover formed a micronation for book lovers.

The kitsch mansion of the former Romanian president Nicolae Ceaușescu features a golden bathroom.

This gilded emblem was once stolen by a Cookie Monster impostor, who demanded a charitable ransom for its return.

An underground city beneath Krakow's postwar socialist utopia.

Blending modern art with Baroque architecture, this wondrous mosaic grotto serves as the late artist's final creation.

Countless grotesque faces stare out from this eerie Prague art wall.

Walk through Czech history in Prague's largest graveyard.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

Its collection includes a broad array of social, geographic, graphic design, and political history.

The majority of the museum's large collection is held in a storage space open to the public a few times a year.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

One of the world's largest amber altarpieces is housed within this reconstructed medieval church.

In between two buildings in Ljubljana, medieval tunnel to nowhere.

This former railway facility is the oldest in Slovenia, and now houses a museum showcasing the history of steam locomotives.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

This abandoned Slovenian military barracks has become a punky-political art squat.

The great Danube river starts here.