This man-made waterfall was designed to help improve access for spawning salmon.

This abandoned oil depot produces world's longest echo in a manmade structure.

The Titanic sails again in one Scotland man's backyard.

Scotland's oldest medieval bridge is also among the last reminders of early medieval Aberdeen.

St George's Leprosy Museum depicts the gruesome afflictions of those suffering from the disease.

A small collection of magic tricks and memorabilia is now an apartment-sized museum.

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

This bronze statue of Martin Luther King was placed in the park without permission.

This colorfully-painted tunnel links two distinct parts of a historic neighborhood.

The last Oostende trawler to fish off Iceland is now a museum.

A moving memorial to the fallen and missing from WWI trenches.

In the shadow of a former battleground, the resting place for nearly 2,000 soldiers who died in World War I.

A rare example of World War I trenches from the British front.

This memorial museum chronicles the apocalyptic destruction of the First World War.

A unique museum tells the story of the day-to-day life of World War I soldiers.

This collection of lurid religious statues tell the tales of a saint who stood down the devil.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

These rustic holiday homes are made from discarded fishing boat hulls.

Underneath a chalk hill in France lies what Hitler hoped would be the underground launching base for a devastating new weapon.

A sublime medieval path adorns the marble floor of one of the most beautiful Gothic cathedrals in France.

The birthplace of the ferocious William the Conqueror, this castle is awash in medieval history.

The Lone Star plaque hangs in a bombed-out bunker in Normandy to honor a Texan colonel's heroic actions on D-Day.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.