A strange machine made to evaluate the world economy using water and lots of tubes.

Large Hadron Collider and the Birthplace of World Wide Web.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

The heads of two giant mythological water horses honor Scotland's horselord past.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Northern Ireland's Brobdingnagian stepping stones.

Famously misunderstood wonder of the ancient world

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

This striking statue brings a scene from the African savannah into central London.

The medieval woodcut-style artwork chronicles life in medieval London.

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

Sculptor Antony Gormley used chaos theory and fractal growth to design his tallest creation.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

The commemorative stone column conceals a secret laboratory.

William Smith's iconic "map that changed the world" is hidden behind a curtain in the Geological Society building.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

A marvel of Byzantine engineering under the streets of Istanbul.

At this museum in Iceland, visitors can sample fermented Greenland shark.

A bit of the Berlin Wall was gifted to the Icelandic capital to commemorate the 25th anniversary of German reunification.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.