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

Looming communist pillar with a Czech twist.

Walk through Czech history in Prague's largest graveyard.

Macabre astrological automaton clock dating to the late 1400s.

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

A man throwing a giant severed hand towers over Antwerp’s main square.

The patron of this extravagant Art Nouveau confection insisted that nothing less than a boat should project from its facade.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

A patriotic medieval knight in driven-nail armor raised money for widows and orphans of WWI.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Apartment complexes built into huge repurposed natural gas tanks.

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

The Habsburgs' royal collections of art and wonders.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Baroque celebration of the end of the Great Plague of Vienna.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

Op-art architecture designed for happiness.

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

This former insane asylum now holds a pathological anatomy museum.

The final resting place for the remains of 143 Habsburg royalty.