This subterranean necropolis holds three floors of antler-dug grave caves.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

Part museum, part piece of Arthurian-inspired history, this stately hall attracts King Arthur fans from miles away.

This striking observation tower shaped like a spinnaker sail is the newest icon in historic Portsmouth.

One of England's most famous churches hides a pair of little known architectural treasures.

A set of medieval stained-glass windows tell the gruesome story of a Viking siege.

An impressive armored bronze effigy marks the tomb of one of the medieval era's greatest warriors.

Perhaps the only prehistoric monument with its very own public bus stop.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

The remains of a small medieval chapel mark the legendary birthplace of the patron saint of Wales.

The castle still holds traces of the abandoned Roman fort it was built atop.

Recently restored menagerie of Victorian-era beasts.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

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

The dance of this huge clock is a magnificent and eerie commentary on good and evil in the history of humankind.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

The fountain marks the area where hundreds of accused witches were burned at the stake.

A succession of eerily contemplative iron figures lead from a Scottish museum to the sea.

The Scottish Reformation leader's grave was paved over and is now a parking lot.

This Roman relic was discovered in Scotland by a mudlarking ferryman.

This repurposed church offers a more literal way to get closer to the heavens.

Edinburgh's oldest statue hides within a parking lot behind the city's iconic cathedral.