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

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

This aging storage facility is the world's largest brick warehouse.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

The first archaeological site discovered by aerial photography.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

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

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

Half-drowned wooden stumps and stone blocks are all that remain of a Victorian landing that was destroyed by storms.

These Roman ruins in England’s Lake District are 2,000 years old, but look pretty good for their age.

Overlooking a Scottish loch, this beautifully crumbling castle once inspired a poem by William Wordsworth.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

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.