A small granite monument marks where the borders of three countries meet.

A road runs through the middle of this small Austrian chapel.

This famous archeological mystery may be an ancient example of movable type.

This breathtaking island on Rwanda’s Lake Kivu is a haven for thousands of fruit bats.

A trail of footprints discovered after a landslide was left not by the Devil, as originally believed, but by an early human ancestor.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

Florence’s mother built a stairway down to her daughter’s coffin so she could comfort her during storms.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

The largest treasure hoard in Europe is contained in a castle that was bombed out during World War II.

A fiery crater has been burning in the Karakum Desert since 1971.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

The suspected burial mound of legendary Viking Björn Ironside.

An otherworldly, fossil-rich cobble beach holds Viking graves, cairns, and other remains.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

This burial mound is said to be the final resting place of Russia's first Viking ruler, Oleg of Novogrod.

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

This tiny island featuring 9th-century Viking ruins is only accessible at low tide.

A stone in Wolin, Poland, marks the possible location of a legendary Viking fortress.

According to legend, this boat-shaped henge is built over the grave of a mythic king.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

Iron Age grave stones and Viking burials, a short drive from Gothenburg.

This Danish rock field is actually a sprawling ancient cemetery holding the bodies of 700 Vikings.

An intricately carved Viking church overlooks a glistening fjord.

Mounds, rune stones, and a 1,000-year-old church, left behind by Denmark's first two kings.