This 18th-century fort surrounded by a moat was used to store gun powder and ammunition, and now sits in the middle of a large part in Dublin.

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

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

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

This statue celebrating everyday life in Dublin has a few unsavory nicknames.

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

This neon landmark has been posing this deadpan question to follicly-challenged Dubliners for over 50 years.

This supermarket offers shoppers a window into the past alongside their groceries.

The chaotic studio of one of the 20th century's most important artists has been preserved down to the dust.

This pub built its reputation pouring post-shift pints for employees of the cemetery with which it shares a wall.

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

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

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

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

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

The fantastic architectural models of a French traveler.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

A perfect circle of twenty-four mysterious holes dates back to prehistoric time.

This vast collection of smoking pipes from across the world spans centuries.

The last of Amsterdam's original sea level markers remaining in place.

A collection of biblical memorabilia.

The world's only museum devoted to the wonders of fluorescence.

A unique collection of gilded age mechanical pianos.

This cheese shop also houses a museum devoted to Dutch dairy.