The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

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

The most visited, and possibly most controversial, museum in Germany.

This once-derelict building is now one of the most beautiful bookstores in the world.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

An enormous and lavish Gothic church in Czechia.

A church of bones, decorated with 40,000 human skeletons.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

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

Two stunning 17th-century libraries and a cabinet of curiosities.

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.

A Jenga-style cylindrical tower of books that appears to go on forever.

Macabre astrological automaton clock dating to the late 1400s.

A series of playful yellow penguins share a serious message about the environment.

This spooky statue sits outside a famous Prague theater.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

This charming wooden church was disassembled and moved not once but twice before settling in this Prague garden.

This bar and museum are devoted to the controversial comic book work of Kája Saudek.