The genre of the story Alice in Wonderland is fantasy. Wonderland is a world that doesn't connect with real life, Wonderland is something that couldn't possibly exist and that was invented by someone who was a very creative and imaginative person.
What is the fantasy genre?
The fantasy genre involves supernatural and magic events, while also authors tend to put magical characters in the story such as dragons, fairies, etc. Normally, fantasy books, movies, etc are all imagined and are never actually real.
I apologize if this was wrong. I hope you have a lovely day! :)