A large collection of ancient runestones decorates this university courtyard.

The final resting place of the father of modern biological taxonomy.

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

There are hidden patterns on the subway seats of some Stockholm metro cars.

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

This pair of unsuspecting buildings are in fact the very first modern skyscrapers in Europe.

A concrete mushroom that divided Stockholm residents for nearly a century.

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

This statue and park honor the Swedish chemist Jacob Berzelius, one of the founders of modern chemistry.

Finally reunited, the three effigies now stand in a museum courtyard.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

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.

One of the world's first dedicated bank buildings in the world is now the oldest one.

A mammoth WWII anti-air defense tower has been repurposed as a hotel with a rooftop garden.

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

This red light district plaza memorializes the Fab Four and their historic connection to the area.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

Hidden in plain sight on a gable between two towers on the roof of shipping firm F. Laeisz' headquarter in Hamburg sits an unexpected bronze sculpture.

An ornate private entrance to the Vienna subway built specifically for the emperor.

A gift from Emperor Franz Joseph I to his wife.

A memorial to those who donated their bodies to science.

Physicist’s epitaph provides final confirmation to a career of turmoil.

Often mistaken as a medieval Gothic monument, this unique cornerstone only dates back to the 1980s.

Brass plaques embedded in pavement preserve the memories of those who lost their lives at the hands of Nazis during World War II.