England's largest white horse isn't even white.

This network of narrow, medieval passages has the most delightful name.

Follow the original medieval paths that wind through this intriguing section of the city.

Cycle the solar system—from the sun to Pluto—right here on earth.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

One of the shortest streets in York has an especially odd name.

A million and a half tons of earth were used to create one of the world's largest land sculptures.

Museum celebrating the history of computers, especially their role in codebreaking.

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

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

Metro station with a claim to rock n' roll fame.

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

Cold war icon and onetime "hole" in the iron curtain.

A fascinating insight into daily life in the Eastern Bloc.

A moving memorial to the fallen and missing from WWI trenches.

This Luxembourg cave is covered in cryptic looking marks left by mining activity.

This 600-year-old home seems to defy physics.

A former ironworks that was the first UNESCO industrial site.

Despite centuries of architectural innovation, this French castle is being built like it's the 13th century.

The largest whale museum in Europe allows visitors to walk among life-size giants.

This stunning concert hall has become a symbol of Iceland's national recovery.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

Walk in the footsteps of the gods and straddle two tectonic plates.

Medicinal spa created with the discharge from a geothermal energy plant.