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.

One of the world's few mounted blue whales, its jaws are hinged open allowing visitors to descend into a lounge.

This encrypted monolith protected a secret of Norse mythology by hiding in a church wall for over a millennium.

Street artists transformed this abandoned industrial neighborhood into one of Europe's largest graffiti exhibitions.

This collection of 80 polarizing foods aims to challenge your subjective notions of repulsion.

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

A man has revenged his true love's betrayal through tears and stone genitalia.

The world's oldest individual clonal tree looks like a wimp despite standing tall for 9,550 years.

This chimerical bridge/tunnel appears to dead end right into the sea.

A golden egg-shaped sauna in the Arctic tundra.

Crooked windswept pines give this old forest an enchanted and magical look.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

This homeless brass fox tugs at your heartstrings from the foot of a Stockholm bridge.

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

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

Bring your hiking shoes, wool socks, and thermal underwear for a stay in these cozy forest huts.

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

The world's largest model of our planetary system.

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

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

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.

This extensive collection covers thousands of years of Polish military history.

This enormous 32-foot painting depicts Poland's greatest medieval battle in glorious detail.