With an estimated 670,000 islands scattered across the vast ocean, no two are exactly alike. Some are known for their natural beauty, while others stand out for far stranger reasons; from islands inhabited by unusual animals or shaped by bizarre geology, to those cloaked in mystery with abandoned structures, eerie legends, or secretive human activity.
Some of these places blur the line between fascinating and unsettling. Whether their peculiarities come from nature or human history, each one tells a story that defies expectations. In this gallery, we explore some of the world’s most unusual islands. Want to know what makes them so strange? Click to find out.