The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

This giant subway sculpture celebrates the fruit that inspired the theory of gravity.

Sweden's largest optical telescope sits on a rooftop in Stockholm.

The Swedish flag over this small naval fort signals that the nation is at peace.

Sweden's oldest animated sign is still lighting up the skyline today.

Stockholm's narrowest alley is barely over two feet wide.

The single richest source of elemental discoveries in the world.

Stockholm's tiniest statue is of a small boy looking at the Moon.

Early habitat dioramas and home of the elusive gaff, the skvader.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

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

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

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

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

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

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

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

The world's largest model of our planetary system.

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

A tiled, multi-level garden of survival in Lyon.