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

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The historic tower houses of this nearly abandoned Greek town have been compared to the spikes on an iguana's back.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

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

A strange egg in a mucky bog of western Ireland marks the spot of an aviation milestone.

A stunning Victorian abbey and walled garden on a lakefront.

This cemetery overlooking the Benbulben rock formation is the final resting place of one of Ireland's most beloved poets.

You can see three Irish counties from this Neolithic hillside fort, once the seat of the Kingdom of Ailech.

The atmospheric road was never meant to be so creepy.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

Northern Ireland's Brobdingnagian stepping stones.

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

This Italian-style temple replica has been threatening to fall off the Irish coast for hundreds of years.

This two-legged horse statue celebrates a beloved cartoonist and his quirky characters.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

Inside this art museum resides one of Glasgow's most famous musical instruments.

The location of the Bridge of Death and the Gorge of Eternal Peril in "Monty Python and the Holy Grail."

A discarded umbrella stand from a women's prison is an object of pride at a library that is dedicated to women's culture and achievements.