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

At high tide this strange footbridge appears to have no purpose whatsoever.

This modern monument to pagan belief looks like it was transported straight from ancient times.

A winery built on the site of a Gallo-Roman estate uses historical tools to recreate ancient vintages.

A "miracle" that seems to produce more holy fistfights than holy revelations.

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

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

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

A perfectly circular stronghold constructed in the 10th century is now a nucleus of Viking culture housing a museum, village, and reenactment of an epic Viking battle.

Reputedly the smallest jail in North America.

A historic steam train meanders along one of the most scenic rail routes in Germany's Black Forest.

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

This restored farmhouse is a time capsule of a 19th-century Colorado homestead.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A precariously balanced rock perches on the edge of a cliff created tens of thousands of years ago by glacial erosion.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

Watch the newest land on the planet form before your eyes.

A rare kind of blue bear can be found chiefly in the national park that shares their name.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

Massive mounds of golden sand look like a desert landscape randomly plopped in an Arctic forest.