Famously misunderstood wonder of the ancient world

The world's largest collection of witchcraft regalia.

This homeless brass fox tugs at your heartstrings from the foot of a Stockholm bridge.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

Sweden's "good old days" painstakingly re-created in a model village.

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

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

Nearly 40 miles and 1,000 years of limestone mines under Denmark.

This sublime architectural marvel is a rare example of an expressionist church.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

A startling, centuries-old subterranean marvel hides in plain sight.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

At this rare mosque in Tbilisi, Sunni and Shia Muslims pray side by side.

Someone left a Boeing 737 in a field in southern Bali.

The sign at the garden gate reads: "These Plants Can Kill."

The longest hedge maze in the world.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

Four miles of pipelines form the model of still-functioning retro-tech efficiency.

The sacred shrine of the Yazidis.