The largest portal tomb in Europe has a capstone weighing around 150 tons.

Certain traditions prevail on the least-visited island of the Aran Islands.

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

This ancient Irish tower could easily have stood in for Rapunzel's prison.

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

An 1814 castle that hosts an exhibit of "explorabilia".

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

A rocky Irish outcropping with a history of wealth, conflict, and ruin.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

Local legend says the remains of Father Christmas lie within the medieval grounds.

One of Ireland's most infamous prisons for rebels including men, women and children.

The world of the ancient Celtic civilization explained through a bewitching 11 acre garden.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

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.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

A massive Montreal stadium that has seen nothing but trouble since its inception.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

The world's tallest boat lift stands as a massive piece of industrial tourism.

A pilgrimage site where people ask Saint Dymphna to watch over those who are not of sound mind.