The oldest warship in Europe is still afloat.

A little sculpture with a large wardrobe.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Christ's blood allegedly preserved in a Belgian town.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

A Stockholm metro station is home to an escalator that is not only the longest in Sweden, but among the longest in the world.

An 11th-century runestone decorates the halls of Terminal 2 of this Scandinavian travel hub.

When this 18th-century observatory's meridian was moved, it set Sweden's time back by 0.04 seconds.

Stockholm's narrowest alley is barely over two feet wide.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Stockholm's deepest subway station is also a stunning ecological wonder.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

It houses the remains of a 17th-century version of the Titanic.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

The final resting place of a celebrated First Nations man who traveled through England with a snake oil salesman.

Commemorating the landing of William of Orange with his European army on their way to the Battle of the Boyne.

A restored World War II Churchill Mark VII Tank now stands guard in Carrickfergus.

A museum dedicated to the tragedy of Bloody Sunday.