The modern birthplace of Irish freedom.

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

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

Behemoth, cannon-like telescope operated by generations of Irish earls.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

An ancient neolithic tomb that only sees the sun twice a year.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

The ancient tomb acts as a calendar that keeps perfect time.

The most loyal of little dogs, or a Victorian era publicity stunt?

Ancient cliffs resembling a kilt on Scotland’s second-largest island emit an entrancing sound.

A 18th century graveyard and its astonishing cortege of macabre iconography.

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

An ancient knight and a symbol of the city's freedom.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

A mountain pass in Bulgaria's Balkan Mountains was the site of four historic battles.

A magnificent, glittering building tucked into a tiny Bulgarian mountain town.

A striking symbol of the Bulgarian capital.

An abandoned saucer-shaped monument in the Bulgarian mountains.

Carvings in Turkey's Marble Road may have directed ancient Romans to a hidden brothel.

Over the centuries, this island paradise has done it all, from providing monks with ecclesiastical respite to sheltering an exiled Leon Trotsky.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

Ancient serpentine sacrifice holder that has stood the test of time.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

The ancient latrines of the Greeks, in all their public glory.