Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

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

The ancient tomb acts as a calendar that keeps perfect time.

A billionaire heiress' menagerie of animals were lovingly laid to rest on the grounds of her former estate.

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

The creek where a shark wreaked terror upon New Jersey, and served as the inspiration for "Jaws."

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

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

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.

Elevated freight railway turned wildly successful urban park.

Sweden's oldest street has not changed for nearly a millennium.

This ordinary street was made infamous by a legendary visit from the devil.

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

Paths are maintained, but trees have taken over plots.

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

Akureyri is home to an oversized can of one of Iceland's favourite beers.

This verdant, tree-lined Reykjavik graveyard is both enchanting and eerie.

A blacklight mini-golf fever dream pays tribute to the iconic rock band.

The little-known final resting place of one of America's greatest writers.

A vintage video game wonderland in downtown Reykjavik.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.