This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

After the construction of a nearby cathedral obstructed the view, the oldest belfry in Belgium was more than doubled in height.

Visiting this café is like visiting the Austrian grandma you wish you had.

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

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

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

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

The beautiful baroque library of the Hapsburg empire.

The statue of a cursed knight is said to come to life every 100 years.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

This doorless 20th-century elevator doesn't stop or slow down.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

Macabre astrological automaton clock dating to the late 1400s.

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

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

This Polish cave has housed a dragon, a brothel, and an enduring legend.

These crumbling Nazi artillery bunkers are now fair game for massive graffiti projects.