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

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

This simple roadside art installation ended up sparking a folk art movement and a controversy of international proportions.

From under the bed of one of the co-founders, this server helped launch the notorious file-sharing website.

A peat bog in southern Sweden provides a cozy and photogenic home for junked Volvos, Saabs, and the occasional American muscle car.

The dome-shaped reservoir of this old water tower produces unique acoustic effects.

Enigmatic bug-like sculptures mystify drivers along a Swedish highway.

The trailblazing Swedish businesswoman created a beloved minty candy called polkagris.

This encrypted monolith protected a secret of Norse mythology by hiding in a church wall for over a millennium.

Once the nail factory shut its doors, this Swedish factory town was abandoned, leaving behind a modern ghost town.

An eclectic sculpture park rises atop a giant pile of ashes in Sweden.

Stone carvings record the Norse myth of Sigurd, providing a glimpse into Scandinavia's transition from paganism to Christianity.

This wonky bit of historical taxidermy is experiencing a second life online.

Thousands of biblical and pagan images are carved into this small 12th-century church.

This cheeky statue of a man defecating gold coins graces the facade of a medieval guildhall.

This strange sculpture is an enigmatic icon of this medieval German town.

These brass bunnies honor the rabbits that dominated the no-man's-land around the Berlin Wall.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

This historic system is the zero level benchmark for measuring the depths and altitudes of the Baltic.

Pictures tacked onto trees remember the more than 40,000 of Stalin's victims buried here in mass graves.

Rare documents, old instruments, and gruesome specimens showcase the history of military medicine.

An unusual collection of self-made musical instruments and unique noises.

A replica of the straw hut where Vladimir Lenin lived in hiding, disguised as a hay farmer, in 1917.

This abandoned beacon is moving closer and closer to the sea.