A labyrinth hides in plain sight at each of the city's 270 Tube stations.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Ship-sized kinetic sculptural fantasy.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

Two plaques commemorate the site of Shakespeare's first theatre.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

The monster at the center of the Darwin Center Spirit Collection.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Repository for more than 22 million pickled specimens.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Eighty million natural history specimens call this gargantuan museum home.

Rebuilt remains of a temple to Roman god Mithras.

A hands-off space for graffiti artists to hone and display their skills.

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

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

This impressive rupestrian engraving dates back to the Upper Palaeolithic period.

A fortress off the West coast of Portugal that dates back to 1502.

An abandoned tuberculosis hospital said to be haunted by the patients who died within its walls.

Nestled in the mountains of Portugal is a tiny village made almost entirely of schist.

The "Little Ones," show Portugal in full miniature splendor.

This castle has links to Portugal’s founding and struggles for independence.

One man's remarkable private collection of art from around the world.