A somewhat mysterious biomedical museum housed inside a Spanish university.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

Whether they are bulls or pigs, these ancient animal sculptures are fascinating relics.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

One of the world's oldest universities houses an incredible collection of anatomical models, mummified body parts, and human bones.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

Eighty million natural history specimens call this gargantuan museum home.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.