These books and films have become a cultural sensation, still pervasive around the world despite the fact that it's been over 25 years since the first 'Harry Potter' book was released.
Since then, there have been eight films that have generated billions in revenue, attracting a loyal legion of fans. There have been multiple spin-offs such as the 'Fantastic Beasts' franchise, a successful play, video games, and, now, the upcoming TV series on HBO.
In this gallery, celebrate the legacy of 'Harry Potter' with some surprising and unexpected facts about the franchise. Click on for more.