The vast, legendary catacombs hold secrets much stranger than stacked bones.

The final resting place of the famed German pilot, the "Red Baron."

Journey through one of the oldest industrial sites in Scotland.

The former seat of power for the Balliol dynasty.

A magnificent tomb that was the final resting place of the Dukes of Hamilton.

These characters from a Robert Louis Stevenson novel stand in an unlikely place.

A medieval device used to punish and shame wrongdoers still hangs outside the village church.

A shiny sculpture celebrating the mighty mollusk.

This sculpture commemorates Edinburgh's sister city and their respective celebrity dogs.

The artwork mysteriously appeared within an Edinburgh cemetery.

This tiny weathered plot is one of the oldest Jewish cemeteries in Scotland.

The healing properties of this well attracted royals and commoners throughout the Middle Ages.

These ancient symbols freckling a Scottish cliff remained hidden for centuries.

Nestled among the living residents is the final resting place of an apothecary plague victim.

Forgotten jail cells beneath this Scottish town hall are now used for delightfully artful storage.

This stately bank building hides a spectacular star-studded ceiling.

This 16th-century close preserves an unusual piece of Edinburgh's transportation history.

A pair of stones embedded in an Edinburgh street memorialize one of the city's last public hangings.

It's a mystery how these curious columns wound up in an Edinburgh suburb.

The discovery of this Neolithic settlement, which contained a Stone Age "cathedral," threw archaeologists for a loop.

Long abandoned underground complex to keep royals safe from a nuclear war that never came.

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

Ruined castle with subterranean vaulted Goblin Ha' or "Goblin Hall."

This series of Scottish caves has no clear purpose other than baffling historians.