A memorial to the beloved brown bear that served in the Polish army during World War II.

Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

A monumental underground karstic wonderland is also the water source for over a million citizens of Beirut.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

The largest fountain in Bratislava.

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

After a nearly successful attempt on Hitler's life, the conspirators met their fate in the courtyard of this Berlin building.

Tiny memorials honor individual victims of the Holocaust.

A 12th-century fortress containing some of Berlin's oldest buildings.

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.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

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

Terrifically morbid cemetary and site of famous Paracelsus' grave.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

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

Amidst medieval and baroque buildings, five human-sized gherkins stand tall.

The beautiful, ornate weather station is the most popular geocache in Salzburg.

This small Bavarian graveyard is filled with empty graves for German soldiers lost during the World Wars.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.