This modest marker near Notre Dame identifies the very center of Paris.

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

The approximate spot where the last Grand Master of the Knights Templar was put to death.

The celebrated eyesore created by starry-eyed sweethearts.

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

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

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

A short distance from the Eiffel Tower is the final resting place of several of the city’s more well-known and interesting characters.

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

A vast Communist-era exhibition space in the Bulgarian capital.

A shopping mall housed in a historic cinema and hiding ancient ruins under its floors.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

A gigantic statue of a Russian soldier watches over the ancient city of Plovdiv, a prominent reminder of the Soviet period in Bulgaria.

Eastern Bloc nostalgia, anybody?

This building has two facades of clashing architectural designs.

Sofia's legislative center is continuously reinventing itself.

This statue of an everyday cleaning tool sits proud upon a plinth in Manchester's coolest quarter.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

When the city of Manchester built a new centralized heating network, they did it with style.

The city of Manchester quietly unveiled this tribute to a 19th-century massacre.

Two of the most notable names in automobile history are commemorated at the place where they're said to have first met.

In the midst of a living monument to Soviet social engineering, Polish Catholics built this church by hand.

A Gothic-inspired fish market is Gothenburg's best place to find loaves and fishes.

A 19th-century home, embellished with gnomes.