The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

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

A wooden street sign is the last remnant of this 400-year-old alleyway.

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

This hole formed by a glacier is the largest and best-preserved of its kind in Stockholm.

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

What looks like a birch tree smushed between two pieces of glass often confounds commuters.

Tucked away in a downtown Stockholm park are the remains of a World War II defense position.

A 130-year-old urinal is the oldest of Stockholm and perhaps all of Sweden.

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

A Stockholm metro station is home to an escalator that is not only the longest in Sweden, but among the longest in the world.

Sound travels strangely in this underground whispering gallery.

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

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

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.

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

Stockholm's deepest subway station is also a stunning ecological wonder.

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

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

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

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

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

Named after one of Canada's greatest writers who lived out her days in this quaint neighborhood.