The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

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

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

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

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

This automated sculpture of two men peeing will spell out text messages with their micturition.

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

Steadily reminding Czechia of its past.

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

One of the famous Czech artist's lesser-known Prague installations appears to be a glowing fetus affixed to a drainpipe.

Tucked away in a Prague park, a statue beloved by romantics honors a poet so nice they buried him twice.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

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

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

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

Macabre astrological automaton clock dating to the late 1400s.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

What was once an underground Nazi city is now Europe's largest bat reserve.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

Real bones which are said to have belonged to a Polish dragon.