An impressive bridge over a ravine also served as an aqueduct.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

A whimsical bridge uses saxophones to pay tribute to two great men and the European Union.

The hairpin turns in this mountain road take the shape of a letter—is it a coincidence or a symbol of love?

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

The only known mosaic depicting the Greek god of sleep, Hypnos.

Its frescoes depict the likeness of Marshal Tito, Karl Marx, and Friedrich Engels burning in hell.

A 1,000-year-old church holds the bones of the Christian martyrs who died hiding inside it.

Three underground crypts and a pointed arch under the bell tower make this cathedral unique among Romanesque churches.

Geometry and mystery come together in an epic show of octagonal masonry.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

Southern Italy's spinning top village.

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

Steadily reminding Czechia of its past.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Looming communist pillar with a Czech twist.

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

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

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

Macabre astrological automaton clock dating to the late 1400s.

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

This plaza is home to a number of works, including Montpellier‘s own Arc de Triomphe.