An abstract representation of weather in Sweden.

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

The Swedish flag over this small naval fort signals that the nation is at peace.

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

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

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

Outside a Viking museum sits a modern-day runestone made by a Swedish runemaster using traditional methods.

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

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

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

Sweden's oldest animated sign is still lighting up the skyline today.

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

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

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 narrowest alley is barely over two feet wide.

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

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

This tidal island, a sacred site in early English Christianity, was the target of a notable Viking invasion.

These upturned herring boats make nifty storage sheds for fishing goods.

This unchanged Victorian park is rumored to have been the inspiration behind Peter Pan's Neverland.

The first archaeological site discovered by aerial photography.

Famously misunderstood wonder of the ancient world

An authentic, seaworthy replica of the ship that sailed to Newfoundland in 1497.

The largest greenhouse in the world is home to over one million types of plants.