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

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

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

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.

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.

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

The discovery of an old wall led to the creation of this fascinating museum about the city in the Middle Ages.

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

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Once a meeting point for great thinkers, and the midpoint of the country.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

A subterranean house of worship carved right out of the bedrock.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

A lovingly curated curio shop in which the taxidermy wear newspaper party hats, and peanut shells are spread across every surface.

This church also serves as a lighthouse complete with a beacon.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

A medieval setting reimagined into a unique art alley.

A unique sculpture calls the outside of this steakhouse home.

The oldest continuously operating pharmacy in Europe.

Spend your honeymoon where the Devil had his wedding.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

The oldest church in the Estonian capital is home to over 100 fantastical cemetery coats-of-arms.