More than a century old, this cast iron bridge on the Balmoral Estate leads to nowhere.

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

These grandstands are among the oldest continuously used stands in the world.

There's a strange stone hoodoo towering atop a wooded hillside and no one is quite sure how it got there.

This lovely ancestral home inspired the author D.H. Lawrence, and features a tunnel made out of a living willow.

This chain of artificial lakes was an ideal test ground for the aircraft that would carry the "bouncing bombs" used by the WWII "Dambusters" squad.

Parts of this former military training ground may have inspired parts of J.R.R. Tolkien's famous fantasy series.

This Roman archeological site is hidden amid a 1930s housing estate.

This sculpture commemorates a naturalist and an illustrator whose work was a forerunner to modern field guides.

A 18th century graveyard and its astonishing cortege of macabre iconography.

Catholics make up 84% of Ireland's population but this Dublin museum remembers the small but important Jewish community.

This charming English house was once the home of England's most famous poet.

A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

A wildlife paradise, this island is one of the world’s most important habitats for burrow nesting seabirds.

The legend says that this English rock formation was once a hunter who was turned to stone by annoyed witches.

These haunting ruins belong to an ancient village that once had one hell of a view.

This neolithic stone grave has been altered and restored so often its now more neo than lithic.

The last known resting place of the king who united England.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

An extraordinary library and archive dedicated to the history of the Arctic and Antarctic poles.

A genuine Little Shop of Horrors.

An underground city of salt.

Real bones which are said to have belonged to a Polish dragon.