An exquisite and eclectic selection of African masks stands out within a massive woodcarving marketplace.

Enigmatic bug-like sculptures mystify drivers along a Swedish highway.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

This chimerical bridge/tunnel appears to dead end right into the sea.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

Macabre astrological automaton clock dating to the late 1400s.

Go inside to really appreciate this 500-year-old technological masterpiece.

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

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Past the hills and beyond the graveyard, this church feels extremely out of place.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

A fantastic place to see murals, and an important location in the history of Toronto's legal street art scene.

An alien church provides much needed silence in the midst of a Finland shopping center.

Caves famous for the dragon-slaying saint who lived there.

This amazing pedestrian suspension bridge in the Swiss Alps would give Indiana Jones nightmares.

Two standing giants remain as a tribute to Luxembourg's metallurgical past.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

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

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.