This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.

Brussels' favorite peeing boy has a sister.

A bronze statue of the fictional character nicknamed "Mrs. Hat" from a beloved Belgian comedy.

A little sculpture with a large wardrobe.

When you're a great Russian Tsar, even your vomit gets a statue.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

You would never come across this tiny green oasis if you didn't know it existed.

A beer pipeline runs beneath Bruges.

You can spot this teeny tiny stained-glass window from the Bonifacius bridge.

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

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

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

The video game-themed street art first popped up in the French city.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

This recessed garden protects thousands of mountain plants by creating its own microclimates.

The narrowest street in Paris.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

Beggars were miraculously "cured" of their fake ailments when they returned home to this 17th century Paris slum each night.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

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

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

The celebrated eyesore created by starry-eyed sweethearts.

This small, ingenious cannon once helped regulate Parisian life.