A medieval quay that was the Mayflower's final port of call before sailing for America.

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

Where the sleeping monsters of Scotland's oil industry are left to rust.

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

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

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

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.

The U.K.'s first underground railway line is now a lively thoroughfare for runners and cyclists.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

At the time of its construction, this hydroelectric power plant was the largest in the world.

An unusual manor of stunning beauty, born out of a crippling disease.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

This single room has survived the centuries with almost no deterioration.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

Built to transport German U-boats through the never-completed Masurian Canal, the locks near this Polish village are now home to a rope course.

This hilltop ruin is of the hundreds of stone columns built in tribute to the first German chancellor.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

These massive moving sand dunes have swallowed an entire village and are still on the run.

This picturesque castle in Poland has a rich history, including a legend that ties it to lost Incan treasures.

The majority of the highest mountain in Poland is actually located in a different country.

What was once an underground Nazi city is now Europe's largest bat reserve.

A tribute to the first human in space.