A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

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

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

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

Opened in 1976, this monster-sized version of the fast-food franchise is sometimes called the Epic McD.

A sweet symbol marks the place where torturous executions were once carried out.

The most loyal of little dogs, or a Victorian era publicity stunt?

360° views of the city plus five floors of optical illusions and hands-on science.

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

This luxury hotel suite is located deep in the bowels of an old mine.

Few would expect the world's oldest preserved oil refinery to be found in Sweden.

A replica of the beloved character's house, modeled after the author's own drawings.

Look closely, and you'll see this rusty man is crying.

This simple roadside art installation ended up sparking a folk art movement and a controversy of international proportions.

This small group of sand dunes manages to pack in a strange rainbow of colors.

For a couple of months each year this Swedish city turns into a festive neon phantasmagoria.