A 90-ton, gravity-defiant steam locomotive shoots for the skies in this bizarrely beautiful public artwork.

Modern art commemorates one of the first military actions of World War II.

This antique thermometer honors the creator of the first universal temperature scale.

This colorful and quirky set of pegasus sculptures celebrate the works of poet Zbigniew Herbert.

Special benches that play Chopin's music are scattered throughout his native city.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

A striking public sculpture representing the period of martial law in Communist Poland.

The silly symbol for an underground protest group is now scattered around the city.

A collection of old neon signs from all over Poland line a secluded courtyard.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

The world's largest model of our planetary system.

A heated statue pays tribute to one of Sweden's great actresses.

A temporary art piece to celebrate LGBTQ Pride is now a permanent part of Stockholm's traffic landscape.

Small Easter eggs are hidden in the ventilation holes of the city's newest trains.

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

A Japanese video game arcade hides in the back of a Swedish pool hall.

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

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.

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

A large collection of ancient runestones decorates this university courtyard.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.