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.

A steel paper plane is all that remains of a crashed aircraft that caused an amazingly small amount of damage.

This giant crucifix is like U2's Joshua Tree for Swedish death metal fans.

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

A former suicide bridge is now accumulating symbols of love instead of a body count.

It's always game time at Stockholm's only museum devoted solely to video games.

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

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

The only surviving piece of Copenhagen's 16th-century defensive wall.