Harry Potter

Are you looking to find the public locations where the series of movies were shot? If so, try this....

https://www.visitbritainshop.com/world/articles/harry-potter-film-locations/

How old is your granddaughter? I highly recommend the studio tour in Leavesden (though that is in England). If you want to visit filming locations, there will be different suggestions than if you want HP themed tourist destinations. There are lots of places you could visit throughout the UK.

If you want Harry Potter, you must do the Warner Brothers trip(Leavesden near London, but be sure to get tickets months in advance.