A little sculpture with a large wardrobe.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

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

This automated sculpture of two men peeing will spell out text messages with their micturition.

A restaurant and observation deck built in a unique broadcasting antenna.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

A musical instrument played by the sea.

Floating swimming pool within a moored vessel.

Berlin's old airport.

A 12th-century fortress containing some of Berlin's oldest buildings.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Climb inside an iron crystal magnified 165 billion times its normal size.

A mocking tribute to the past and modern leadership of Prague.

Avoid gangster interaction while window-shopping.

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

Ancient paintings known as the "Sistine Chapel of Cave Art."

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

An artist's cute bronze subway sculptures belie his violent artistic past.

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