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

A stunning silver lining to global warming's gloomy cloud.

What might look like a cliffside sacrificial altar at first glance is actually a stone compass pointing to cities and lighthouses all around the world.

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

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

Stay overnight in the world's most sleekly designed rabbit hole, free of charge.

An intricately carved Viking church overlooks a glistening fjord.

Walk behind a 50-meter-high waterfall.

One thousand trees were planted in Norway to be used to print books a century from now.

The world's largest collection of witchcraft regalia.

These Nubian pyramids are strange and unique, even by pyramid standards.

The largest stone moai on Rapa Nui.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

One of the most remarkable caves in all of Iceland was created by a once raging river of lava.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

The final resting place for the remains of 143 Habsburg royalty.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

An artist's mausoleum with a haunting echo.

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

Villas that once served as playgrounds for the rich now fall away in decay.

A giant gorilla made of used car tires used to sit sentinel over a Helsinki college campus.