When this Iron Age bog body was discovered in 1835, it was thought that she had died recently.

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

A small and surprising passageway in Saint Petersburg devoted to the Beatles.

An exhibition of preserved locomotives housed in a 1950s depot shows the history of Denmark's railway.

This roadside attraction looks like a flying saucer parked atop the tundra.

Collection of nearly 500 concrete figures sculpted by the late Veijo Rönkkönen.

A series of modernist treehouse hotel rooms grace the outskirts of an Arctic forest.

Man-made mineral caves house massive bat colony.

A naturally occurring tunnel in this Nordic mountain makes it look like it's been shot.

These old World War II fortifications have been transformed into an unusual equine attraction.

This lonely Lithuanian chapel looks more beautiful and haunting in decline than it ever did in life.

Four alabaster giants contemplate the tides on the shore of Denmark.

Thousands of years of crashing waves gave this mushroom-shaped rock its svelte figure.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

Denmark's famous pseudo-hill.

Hitler's bleak vision of relaxation still stands as a mostly abandoned 10,000-room resort complex.

A peculiar family mausoleum built by a German nobleman captivated by the occult.

Museum deep in the catacombs of St. Michael the Archangel Church is explored by touch, sound, and smell.

Ever-growing collection of devils in art.

Deep in a Polish forest, this collection of Iron Age megaliths still holds onto many of its ancient secrets.

Locals perched on icy thrones brave frigid temperatures during this bizarre winter tradition.

This little gallery is devoted to one small town's passion for a very special cheese.

This imposing 20th-century castle was abandoned before it was ever completed.

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.