The Guinness Record holder for largest hedge in the world is a verdant Scottish bulwark.

Monty Python fans will recognize this abandoned mine as the Cave of the Killer Rabbit of Caerbannog.

The mummified relic of St. Catherine sits forever on a golden throne.

A sturdy relic of Britain's once crucial gunpowder industry is now a haunting Cornish ruin.

The enormous earthwork sculpture honors the ponies that lived and worked in the old colliery.

Where, exactly, the great aviator completed her transatlantic flight has caused some trouble in Wales.

The Stonehenge of Wales is one of the grandest neolithic dolmens still in existence.

A 4,500-year-old forest is slowly being revealed from beneath the sands of a Welsh beach.

The remains of centuries of copper mining appear like an alien landscape.

The world's largest prehistoric copper mine had 30,000 animal bones scattered throughout the maze of passageways.

This park is home to a collection of important industrial and religious sites.

The decaying ruins of Wales' first asylum for the mentally ill.

This abandoned asylum in Wales might look haunted, but it's still beautiful.

One man and his dog, immortalized in a giant statue.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

This huge concrete map of Scotland was built as a thank you gift from a Polish soldier.

An abandoned, desolate train tunnel that was used during World War II.

Built as a training camp, this site became a detainment center for prisoners of war and German civilians during World War I.

In the middle of a barren moorland, the remnants of a lost British Space Age stand like a 20th-century Stonehenge.

These ruins are a hidden gem, complete with fantastic views over the cliff edge.

The remains of a grand castle that may have inspired Bram Stoker's Dracula.

A monument to the 70s rock icon stands on the road into this small Scottish town.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

One of Scotland's most important modern structures, it just made the '100 Most Endangered Sites' list.