This old Estonian mine has been kept like a sprawling time capsule of the local shale industry.

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

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

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

The world's largest model of our planetary system.

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.

These unique stained glass windows were designed by local children using a modern flair.

This millstone commemorates a gruesome tale that may have been the source of the city's name.

This quarry filled with 65 million-year-old limestone is now home to a nature reserve.

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

20-foot tall lamp mumbles Swedish to celebrate the holidays.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

Swedish skyscraper with a 90° twist.

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

The world's first combination ski slope and power plant.

Visitors are treated to a stained glass kaleidoscope interior inside this work of art.

The art museum is decorated with creatively remodeled pre-Nazi swastikas.

This ordinary street was made infamous by a legendary visit from the devil.

A novel collection of medical curiosities housed in an 18th-century surgeon training academy.

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

The largest bottled beer collection in the world holds over 22,000 unique beer bottles.

Museum on earth sciences featuring a recreation of a famous curiosity cabinet.