Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

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

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

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

These fantastically named natural pools look like something out of a Scottish myth.

The castle still holds traces of the abandoned Roman fort it was built atop.

This black sand beach was crafted from volcanic explosions including the historic Minoan eruption.

This ancient Egyptian obelisk still bears the wounds of World War I.

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

East London art gallery showcasing contemporary art from Europe's Eastern Bloc.

A flourishing garden with pigs, donkeys, goats, rabbits, guinea pigs, chickens, ducks, and sheep.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

The commemorative stone column conceals a secret laboratory.

Two adjoining collections of 19th-20th century physics apparatuses and instruments.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

Stockholm's tiniest statue is of a small boy looking at the Moon.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

Stockholm's narrowest alley is barely over two feet wide.

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

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Giant, friendly pelicans in Central London, the most unlikely of places.

Hear the quietest sound from across the dome.

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

England's most notorious suicide spot.