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

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

Op-art architecture designed for happiness.

A spherical "micro-nation" in the heart of Vienna.

Local folklore claims that this wall was not built for defense, but to provide labor during a time of famine.

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

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

A controversial artwork draws attention to the dark history of Prague's "Suicide Bridge."

When the river dries up, these stones start talking.

A half-buried vehicle in Prague's is the latest iteration in a long-running piece by Czech artist David Černý.

Before serving as James Bond's Casino Royale, this Victorian-era spa catered to the world's elite.

A Baroque mansion with ties to legendary magicians and alchemists.

Of all the houses that grace this neighborhood, only one is a testament to surreal architecture.

This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

Tall columns of volcanic basalt make up this improbable-seeming rock formation.

Massive installation of Europe's negative stereotypes.

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

Be(w)ar(e) the moat around this historic Czech castle.

The 14th-century ruins are said to contain healing powers.

A former top secret nuclear fallout shelter now operates like a hotel stuck in the Cold War.

Nine bronze hands protruding from a wall honor the student uprising that led to the fall of Czechoslovakia's Communist government.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

A massive, abstract lookout tower providing a panoramic view of Prague.

This unusually shaped mountaintop tower looks like a UFO floating over the city.