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.

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

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

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

Maybe the only restaurant in the world where your seat will be signed by a Nobel laureate.

The fantastic charm of England's oldest botanical garden has made it a place of writerly inspiration for centuries.

Steampunk, humanoid sculptures crawl on all fours in a Tokyo plaza.

Regency-era excess on the English Coast.

Seat of the Duke and Duchess of Devonshire for centuries.

This bronze statue was dedicated to a 1966 Beatles hit.

A memorial to the politician who became Great Britain's first fatality to be caused by a locomotive.

A relatively obscure antihero from the Marvel Comics universe adorns a wall inside Iceland's main airport.

Walk in the footsteps of the gods and straddle two tectonic plates.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

This aromatherapy shop and mini-museum cofounded by the Sigur Rós frontman documents Icelandic history through scents.

Iceland's tribute to its thankless civil servants.

Though they may seem like simple stones, these rocks represent a ghostly legend.

Pick up this rock and become an instant legend.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

This black church sits alone among a field of lava rock.

A modern artist's primitive stone faces and unique rock instrument join Iceland's terrain with its history.

Europe’s most powerful hot spring supplies the surrounding region with hot water.