Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

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

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

This 1920s Dutch barge is now a floating bookstore.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Eighty million natural history specimens call this gargantuan museum home.

Macabre astrological automaton clock dating to the late 1400s.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Paris' linguistic guide to the international language of, yes, love.

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