Located more than 600 feet beneath sea level, this tunnel boasts the world's first undersea roundabout.

This isolated structure beckons adventurers with sublime views of the Faroe Islands.

This isolated island is often capped by its own fluffy cloud.

No longer the only, but definitely the oldest, fountain in Greenland.

In a country where driving from one town to another is literally impossible, this small stretch of gravel is a remarkable feat.

One Greenland town turned itself into an open air sculpture gallery with the help of a series of traditional stone artworks.

Walrus skulls and narwhal bones were found here while excavating a 900-year old church.

One of the oldest family businesses in Reykjavík serves lamb-based hot dogs.

This oceanside Reykjavik spot is speckled with recycled sculptures and large stones.

Pop culture has helped to keep this iconic British building from being destroyed.

This hidden green space is the city's second largest conservatory.

An ode to a soldier who came to town, fell in love, then began making his own sparkling wine.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

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

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

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.