Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

What if all public housing projects had been designed by "the Pygmalion of modern architecture," not only their prototype?

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

Over 12,000 hygiene oriented objects and exhibits.

When the rain falls, this drain system turns into a musical instrument.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

The Habsburgs' royal collections of art and wonders.

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

A whimsical bridge adorned with decorative dragons.

This house's itty bitty size means no humans allowed.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

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

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

An ancient Egyptian temple in the middle of Madrid, Spain.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Monument to a suicide protesting the Soviet invasion.

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

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

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

Macabre astrological automaton clock dating to the late 1400s.