Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

These fantastically named natural pools look like something out of a Scottish myth.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

This single room has survived the centuries with almost no deterioration.

An abandoned faux-pub made famous by a Guinness commercial.

An ancient holy well said to be used by the patron saint of sailors and travelers, lost in the boggy west of Valentia Island.

A hugely vast Irish landscape of barren rock that stretches for miles.

The ruins of an 800-year-old monastery boasts the tallest round tower in Ireland.

Achill's most recently abandoned village dates back to to the Age of Enlightenment.