This controversial Irish show cave is home to a massive formation known as the Great Stalactite.

The world's toughest modern Christian pilgrimage leads directly to the gates of Hell.

There might not be much left of these Irish ruins, but their linguistic legacy is still going strong.

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

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

A corkscrew-shaped barn in Ireland.

Obelisks and stone pineapples in the Irish countryside.

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

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

Catholics make up 84% of Ireland's population but this Dublin museum remembers the small but important Jewish community.

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

This courtly monument celebrates an influential comedian who turned taking the piss out of the powers-that-be into an art.

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

The oldest public library in Ireland.

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

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

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

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."

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

The modern birthplace of Irish freedom.