The last municipal pneumatic post system in the world was in operation for over 100 years, and may run again.

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

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

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

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

This spooky statue sits outside a famous Prague theater.

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

Macabre astrological automaton clock dating to the late 1400s.

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

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

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

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

A surreal statue honoring Prague's favorite literary son.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Steadily reminding Czechia of its past.

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

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.