A micro-communist utopia in Spain with no police, no mortgages and full employment.

Copenhagen's celebrated theme park and gardens.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Eighty million natural history specimens call this gargantuan museum home.

Breathtaking and huge 430 year old maps of Italy.

Medicinal spa created with the discharge from a geothermal energy plant.

The most loyal of little dogs, or a Victorian era publicity stunt?

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

France's most famous cemetery, with some of its most curious tombs.

The celebrated eyesore created by starry-eyed sweethearts.

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

Eyam took steps to quarantine themselves and keep the plague from spreading.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

The smallest pub in Britain was once a cabinet of curiosities and it still has the dead cat to prove it.

Remote, volcanic island that Darwin, Hooker, and the Royal Navy shaped into a thriving, artificial ecosystem.

The site of the most dived wreck in the UK.

Semi-precious Blue John stones have been mined in this cavern system for centuries.

Seat of the Duke and Duchess of Devonshire for centuries.

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