The world's largest model of our planetary system.

The 19th-century home of Count and Countess von Hallwyl is now a museum.

A king's bloodstained shirt is among the gruesome collection of artifacts displayed below Stockholm's Royal Palace.

This centuries-old rooster survived a devastating fire.

An abstract representation of weather in Sweden.

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.

The discovery of an old wall led to the creation of this fascinating museum about the city in the Middle Ages.

Uppsala's adorable feline sign celebrates a popular children's book set in the Swedish city.

Legend has it this spring formed at the spot where a medieval Swedish king was killed.

A large collection of ancient runestones decorates this university courtyard.

Iron Age "bog person" preserved for over 2,300 years.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.

A historic fire call point.

One of the world's heaviest musical instruments towers within a popular urban park.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

Art and a pun, all in one.

Known simply as "The Hand," this famous public sculpture in Berlin was featured in a Depeche Mode music video.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

Where once there was a train station bathroom, there is now this German burger joint.

This monumental work of art symbolizes the coming together of a previously divided city.

A portable, wooden replica (minus the hyphen) of Hamburg’s iconic crooked coffee shop.

Floating swimming pool within a moored vessel.

An abandoned NSA listening post on Berlin's "Devil's Mountain."