Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Created as a punny statement about genetic engineering this monstrous hybrid statue has become a beloved icon.

A showcase of canine neckwear spanning five centuries of doggie fashion and function.

A chaotic collection of coin-operated slot machines designed to delight and disturb in equal measure.

A village on the east coast of England that has almost completely eroded into the North Sea.

This melancholy headstone is the only remaining evidence of a medieval church lost to the sea.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

An avant-garde artist is survived by his seaside garden.

A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.

This foreboding medieval castle was twice besieged by barons rebelling against the English king.

A six-ton wedding present for the King of the Scots.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

The final resting place of soldiers' loyal canine companions.

A book bound in the skin of an infamous criminal, along with countless other specimens.

360° views of the city plus five floors of optical illusions and hands-on science.

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

This former medical factory gives home to cutting edge arts in the shadow of a gas works.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

One part local history, 99 parts gruesome haunted house.

Eighty million natural history specimens call this gargantuan museum home.

A student driver's nightmare.

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

The last resting place of the famous Native American princess is marked by a haunting monument.