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

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

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

A mocking tribute to the past and modern leadership of Prague.

A surreal statue honoring Prague's favorite literary son.

A quaint Russian village in the middle of a German metropolis.

Meant to resemble a massive tree, the building is the best example of Spanish organicist architecture in Madrid.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Europe's largest supercomputers is housed inside of a disused chapel.

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

A science fiction-inspired apartment building designed by a famous Spanish architect.

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

The largest fountain in Bratislava.

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

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

A Serbian church lit by chandeliers made of weapons.

One of Belgrade's most beloved animals.

A pair of connected skyscrapers form this symbolic gateway.