One of the oldest and certainly best preserved Cistercian abbeys still in existence.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

A pagan tradition of draping trees with rags eerily lives on.

A naturally mummified 2,000-year-old man.

A unique waterfall that some believe attracts the fairfolk.

The heads of two giant mythological water horses honor Scotland's horselord past.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

The remains of Crystal Palace Great Exhibition of 1851.

Surreal riveted sea forts once protected the Kent shores from German attack.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

An unusual round church in London with a Templar past.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

This South London cemetery holds the remains of more than 15,000 people.

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

Northern Ireland's Brobdingnagian stepping stones.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.