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

Sweden's southernmost prehistoric rock art is hidden just outside Gothenburg.

This castle ruin in the middle of nowhere is a gem for wildlife enthusiasts.

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

A forest of immensely tall and unusually straight oak trees planted nearly 200 years ago to build naval ships that never came to be.

Once the nail factory shut its doors, this Swedish factory town was abandoned, leaving behind a modern ghost town.

It was meant to help transport wounded soldiers to a secret underground hospital.

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.

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