The Harry Potter books have been changing all our lives for more than 20 years now, and it doesn't look like their popularity is changing any time soon.
And as every Potterhead knows, it's way more than just a book series. So we want you to tell us your favourite, most fascinating fact about the books themselves.
Maybe it's a funny little detail about one of the many translations...
Or maybe it's an indication of the series' impact on the world.
