Several 12th-century ruins can be found inside this historical market.

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

A series of abstract, silly sculptures represent the works of a great modern classical composer.

The narrowest street in Paris.

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

An unusual number plate signifies the building's saucy past.

This 18th-century sundial was designed to calculate the date of Easter each year.

A poem by Arthur Rimbaud is inscribed on the wall of a street that, while it is only one block long, plays a key role in multiple novels.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

This emotive sculpture was originally created for the 1878 World's Fair.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

This bridge was constructed from the rubble of the infamous Bastille.

One of Jeff Koons’s largest sculptures and his first commemorative work.

The traditional Polish croissant, folded 81 times into the shape of a horseshoe, is a legally protected cultural treat.

These mechanical goats first battled it out in the year 1551, all because of an overcooked deer.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

A spherical "micro-nation" in the heart of Vienna.

Op-art architecture designed for happiness.

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

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

A historic and beautiful Art Nouveau chamber in a historic railway station.

Countless grotesque faces stare out from this eerie Prague art wall.