This open-air museum filled with 19th-century buildings offers a unique view of historic craftsmanship.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

A contemporary art installation housed within a Gothic cathedral.

This "flat geyser" bubbles up out of the ground periodically like a disappearing river.

The single richest source of elemental discoveries in the world.

Although rarely used, there is still a hidden room for the royal family at the Stockholm central station.

The scars of a remarkably organized public protest to save 13 elm trees are still visible in this Stockholm park.

No one knows who's responsible for decorating this tunnel with stuffed animals, but the people love it enough to protest their removal.

A man has revenged his true love's betrayal through tears and stone genitalia.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

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

The remains of Alfred Nobel's first nitroglycerine factory can still be found on the shores of a Swedish bay.

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

The library's graceful rotunda is like a bibliophile's temple.

The internet as provided by a James Bond villain.

This Stockholm light tower can be controlled by anyone with a smartphone.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

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

The world's largest model of our planetary system.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.