This Denmark theme park is part family attraction, part experimental archaeology project.

Six beautiful wooden giants are hidden around Copenhagen.

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

A floating underwater hotel, created by a Swedish artist.

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

The single richest source of elemental discoveries in the world.

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

The world's largest model of our planetary system.

The internet as provided by a James Bond villain.

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

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

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

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

It's always game time at Stockholm's only museum devoted solely to video games.

The remains of Alfred Nobel's first nitroglycerine factory can still be found on the shores of a Swedish bay.

This railroad track was so secretive that it was omitted from all maps.

Ancient burial grounds of the wealthy.

The second-largest collection of runic calendar staffs in Sweden.

Legend says this fabled well held part of a mythical Norse tree.

This runestone once destroyed by an explosion has been painstakingly reassembled to save its history.

A centuries-old iron mine is now a paradise for explorers, divers, and spelunkers.

Swedish mice can dine at the Nuts of Life restaurant or take a date to the amousement park.

A former hen house turned curiosity cabinet displays one man's lifelong fascination with cannibalism.

This mysterious runestone embedded in a church wall is linked to the medieval cult of Saint Erik.