The most northern place on the mainland of Great Britain.

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

Recreations of a Norse longhouse and boat on Shetland's northernmost inhabited island.

This Shetland Islands bus shelter may be small, but it squeezes in a couch, a desk, some art, and even an old telly.

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

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

A museum marks and documents the site of the Titanic's launch.

The ruins of a medieval monastery named after a type of tree.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

A thin pane of glass keeps visitors from sliding off this futuristic skywalk.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

This demon atop the Notre-Dame de Paris looks utterly bored.

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

A little sculpture with a large wardrobe.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

Below the altar in Saint-Willibrord Basilica rests the mortal remains of Luxembourg's patron saint.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.