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

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

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

Old Danish castle immortalized in Shakespeare's Hamlet.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

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

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

This ghost town in Belgium will lose its street art when it ceases to exist.

Most prolific publishing house in the 1600s open to the public.