Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

An important landmark in the history of algebraic logic.

An oddly conical beacon perched atop beautiful Irish cliffs.

Just another ancient, mysterious Irish stone circle.

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

The skeleton of a whale that beached itself in this Irish town is now on display in their public park.

Ruins battered by centuries of war and disaster offer a wondrous glimpse of medieval Ireland.

Once the longest bridge in Ireland, this rusting span sits abandoned and overrun by nature.

A moody and picturesque riverside ruin overgrown with vegetation.

While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.

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

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

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

The Grand Lodge of Ireland is one of the oldest in the world, full of fantastical, elaborately themed rooms.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

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

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

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

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.