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

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

The world's first ice hotel is still one of the most elaborate and beautiful.

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

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

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

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

The largest cave in Northern Europe.

The Brutalist building harbors an unusual inverted dome that swoops down over its central sacred room.

Mysterious man-made rock piles form an ancient cemetery on this rocky beach in Norway.

Art becomes an enchanting part of the environment at this wooded sculpture park.

The painter of "The Scream" is laid to rest under a stoic bust of himself in the humble corner of an Oslo cemetery.

At this Arctic outpost, get to know members of the indigenous Sámi community and meet their herds.

Norway's oldest cathedral still in use.

At the very tippity-top of Europe is a cliff from which you can view the midnight sun.

An artist's mausoleum with a haunting echo.

An intricately carved Viking church overlooks a glistening fjord.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

Remnants of the Nazis' occupation of Denmark linger along the sand.

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

Preserved "bog person" that is over 2,000 years old.

Iron Age "bog person" preserved for over 2,300 years.