The oldest natural aquarium in the United Kingdom.

A Hungarian pharmacy museum with a box full of mummy powder.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

Believed to be the birthplace of John Balliol.

On a hill overlooking Loch Trool, a granite boulder marks the site where Robert the Bruce, King of Scotland, defeated an English army.

A square stone tomb marks the spot where six men were killed while holding a service in Caldoris Wood.

A mysterious ruin shrouded in more folklore than fact.

This stone was once used by druids to determine a person's innocence or guilt.

A historic cave in Scotland once served as a hiding place for a famous Covenanter.

Wonderfully preserved Victorian factory, complete with a preserved steam powered engine house.

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

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

A secret door leads to this cozy dive that sells only “milk.”

The abandoned transportation hub hides within the Glasgow attraction it once served.

Giant topiary dog once played a role in a terrorist bomb plot.

This 19th-century fountain's namesake animal isn't what you think it is.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

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

These skilfully executed, poignant works of art dot a verdant Scottish dell.

Museum dedicated to the terror regimes of Hungary.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

Britain's only herd of free-ranging reindeer.

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

Legend says a witch conjured the world's third largest whirlpool to protect Scotland from a nasty pirate.