A subterranean house of worship carved right out of the bedrock.

An abstract monument to a symphonic composer.

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

An abstract representation of weather in Sweden.

An entire shopping mall and industrial terrain named for the time the king of Sweden's car went into a ditch.

Sweden's oldest street has not changed for nearly a millennium.

Uppsala's adorable feline sign celebrates a popular children's book set in the Swedish city.

A collection of birches from across Sweden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

An early 20th-century bullring converted into a modern shopping center.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

This quaint Spanish village agreed to be painted blue as a marketing stunt but found that they preferred it that way.

Thanks to an acoustic anomaly, this unassuming stone bench has heard one hundred years of secrets.

Giant granite sculptures representing family on the northern coast of Spain.

The oldest Roman lighthouse still in use.

The world's first combination ski slope and power plant.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

Tiring of digging out the door to this church for every service, it was eventually abandoned to the sands.

An abandoned lighthouse awaits its destiny: being buried under shifting sand.

A railway, a waterway, and a roadway all in one, suspended over a rushing river.

A collection of noses tucked inside an art museum reveals how times have changed.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.