This ruined medieval castle was the scene of Lord Robert Dudley’s seductive reception for Queen Elizabeth I.

This modern labyrinth lies in the shadow of a ruined medieval castle.

This early Norman castle was the first historical monument protected by an act of Parliament.

What was once England's second-richest abbey is now a haunting ruin.

The carved medieval stones stand near the ruined abbey's parking lot.

Scotland still bears an enormous scar of its Roman past.

Artists have long been drawn to these atmospheric 12th-century ruins.

The ruins of the second of three churches dedicated to the saint in a touristic Scottish town.

The ruined abbey includes a rare surviving example of a monastic latrine.

The last two abbots of this monastery were both executed by Henry VIII.

This beautifully situated lakeside Roman settlement was likely built during the reign of the Emperor Hadrian.

Now in ruins, this castle stood for centuries and saw a number of gruesome events.

These ruins witnessed the final gathering of the failed Jacobite Rebellion.

A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.

A ruined castle has more than its fair share of legends and ghost stories.

This antique prison is a tourist attraction with a sordid past.

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

The largest greenhouse in the world is home to over one million types of plants.

400-year-old garden, restored to beauty.

A 16th-century artillery fort built to protect England against European invasion.

A fantastic castle rumored to be the birthplace of King Arthur.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

A whimsical cottage from the 1300s with a preserved Victorian-era post office inside.

A well-studied colony of endangered bats roosts in this abandoned Victorian Gothic mansion.