This ferry carries passengers across the Rhine propelled by no engine or paddles but by the river's current.

Switzerland's oldest public observatory is an important part of the Zurich cityscape.

This French chateau is home to the world’s largest private collection of fighter jets.

From Carthage's Hannibal to riders of the Tour de France, many have crossed this scenic route through the Alps.

On the water, the sound from this horn could be heard from up to 10 kilometers away.

One of the highest mountain passes in Europe has been ranked among the best driving roads in the world.

A little slice of Japan and its aesthetics in London's Holland Park.

Its collection includes a broad array of social, geographic, graphic design, and political history.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

A futuristic rocket marks the spot where three borders meet.

The most impressive of Basel's three remaining city gates.

A massive observation tower that features gorgeous views and unique architecture.

The heart of a Scottish legend had a centuries-long journey before reaching its final resting place.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

Ship-sized kinetic sculptural fantasy.

The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

The bones of two medieval royal lions were discovered at the historic fortress.

The beloved beast's taxidermy remains sit in the Natural History Museum's cafe.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

The place to be if you love vintage Swedish cars.

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

A stunning architectural yet functional feat, towering over Oslo.