Over the centuries, this island paradise has done it all, from providing monks with ecclesiastical respite to sheltering an exiled Leon Trotsky.

Turntable anonymously received orphans, alms, and groceries.

18th century anatomical amphitheater of the Royal College of Surgery of Barcelona.

A former steam-powered mill from the 1800s is now an industrial park with a giant steel dragon slide.

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

This semi-secret storybook hedge maze is also the oldest garden in the city.

A marvel of Byzantine engineering under the streets of Istanbul.