A nun spent 16 years painting the stunning Celtic mural that covers the interior of this WWI memorial.

After it was swallowed by a Georgian mansion, this medieval castle remained forgotten for centuries.

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

Though they've since been renamed, these two streets hint at Dublin's darker days.

A devastating booze inferno poured through the streets, claiming several victims who drank it.

This museum is dedicated to the most famous Irish writers in history.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

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

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

Experience what life was like in Ireland during the Viking and medieval ages.

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

Some of the saint's blood and bones are said to reside in Dublin.

A mysterious plaque to the even more mysterious "Fr. Pat Noise," killed in "suspicious circumstances."

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

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

The home of Ireland's last leprechauns is officially protected by the European Union.