A self-built mosaic house and sculpture park.

A suspended footbridge allows for traversing this gorge carved through the French Alps.

A resort destroyed by a mysterious bombing offers visitors only its remains and the riddle behind it's demise.

Once the hottest nightclub in France, Amnesia now lies in ruins after a 2000 bombing.

Resting on a hill overlooking the coast, these medieval ruins look completely deserted save for their restored chapel.

A surprising and unconventional mosque hidden in the subsoil of Istanbul.

The non-native bovine herd was brought in to help conserve these Berlin wetlands.

An old tram depot transformed into a vintage car paradise.

Berlin's oldest surviving academic architecture hosted decades of animal dissections.

A non-stop elevator ride in Vienna's city hall.

A set of outdoor stairs named in honor of a famous Austrian artist.

A former squatter's paradise outside Prague.

A sculpture of the iconic East German car on four legs is a tribute to those who traveled to Prague seeking asylum.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

This doorless 20th-century elevator doesn't stop or slow down.

Walk through Czech history in Prague's largest graveyard.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

This banal Parisian entranceway is not what it seems.

One of the greatest maze designer’s greatest mazes.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

This Parisian fountain is a little bit fantasy and a little bit nightclub.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.