The library's graceful rotunda is like a bibliophile's temple.

This Stockholm light tower can be controlled by anyone with a smartphone.

Early habitat dioramas and home of the elusive gaff, the skvader.

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

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.