A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

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

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

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

Hear the quietest sound from across the dome.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

Eighty million natural history specimens call this gargantuan museum home.

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

A diminutive statue that was inspired by the sculptor's own daughter.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Once the home of a hermetic monk, this cave now houses a small church.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

Electrical pylon in the shape of Disney's beloved mouse.

The world's largest private aircraft collection.

A building so large that it has its own weather.

These former theme park figures have a new lease on life outside a water plant-turned-restaurant.

These markers are used to determine the ground stability of the Strip.

This former school is now abandoned and a canvas for graffiti artists.

A solemn memorial in a majestic setting that honors a 1692 tragedy.

Home to one of the most popular teams in Scottish football history.