Now home to a drinking establishment, this building has a macabre history.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The fountain marks the area where hundreds of accused witches were burned at the stake.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Mozart's skull may be held in this collection, but definitive proof continues to elude scientists.

The medieval network of canals hidden underneath the city is opened to explorers each year.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

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

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

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

At this cozy bar tucked down a hidden Galway backroad, Guinness makes the Gaelic come out.

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

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

A remarkably intact castle that once was the largest in Ireland.

A moody and picturesque riverside ruin overgrown with vegetation.

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

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

A guitar mounted on a wall in Temple Bar honors the Irish musician.

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

This is the largest cemetery in Ireland and the first cemetery museum in the world.

The house where the writer spent his formative years.

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