Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

On this stunning Scottish island, you can walk in the footsteps of dinosaurs.

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.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

The longest staircase lock in Britain.

A familiar otherworldly creature guards this 12th-century Scottish abbey.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

The "Bridge Over the Atlantic" lets you cross the waterway in mere seconds.

This tiny little cave was said to have been a refuge for a saint with a glowing arm.

An 11th-century Viking gravestone in a Victorian parish church graveyard.

Tour part of the Maginot Line bunker system built to defend France against a German invasion.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

These caves secretly held national treasures during World War II.

A Byzantine-era church hidden in a wooded area below the Acropolis.

Amsterdam's former hotspot for public executions and dissections.

This pirate-broadcasting-tower-turned-restaurant played a rebellious role in the history of Dutch television.

Dedicated to the American general whose reply to a German demand for surrender was simply "Nuts!"

A neo-gothic statue modeled on German Emperor Kaiser Wilhelm II, which had its distinctive mustache shaved off by Nazis in World War II.

A neighborhood church's unusual abstract stained glass was the final project of avant-garde artist Jean Cocteau.

This fountain of a little boy that spits on passersby at erratic intervals is a town icon.

Incredible labyrinth of man made caves.