Known as the most scenic route in Sri Lanka, this train line is steeped in history and offers an unparalleled view of the country.

This elaborate temple was built around one of the Buddha's teeth.

An ancient stone fortress considered by many to be the eighth wonder of the world.

This mesmerizing architectural wonder will take your breath away with its unusual color patterns.

Be on the lookout for the symbolic insect all over the city.

Have a seat with the father of modern computing at this Manchester monument.

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

One of Ireland's most infamous prisons for rebels including men, women and children.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

Largest illuminated advertisement sign in the world.

This "floating railway" is one of the world's oldest monorail systems.

A radio telescope for listening to the stars, based in one of the cloudiest countries in the world.

A beautiful maze marks where three countries meet.

The tallest mountain in mainland Netherlands isn't actually very tall.

This futuristic German television spire is actually the world's largest digital clock.

Twisted buildings adorn the banks of the Rhine river.

This former steel and coal plant is now a neon-lit industrial fantasia.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

These tenacious 14th-century towers defied demolition and are now a fairytale vacation rental.

The struggle of a small Dutch island against the sea.

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.

This giant wire frame man sculpture is crouched in contemplation.