can あなた actually visit hogwarts if あなた truly believe?and do あなた have to be 11 to go ?

I hate to burst your bubble, but fiction is fiction..

1. Hogwarts isn't even real. Sorry, but it isn't.
2. Within the story, seeing and entering Hogwarts isn't a matter of believing in it. It's down to having magic. There are spells preventing Muggles from entering it.
3. Every character has been 11 upon first entering Hogwarts, または 12 if his または her birthday would be on the 1st of September. There are no examples mentioned of students starting later for some reason.

Muggles can't go to Hogwarts, there's a cloaking spell on it. Only witches and wizards can attend, sorry..

But there is a replica in Orlando, Florida that is open to muggles. I went over クリスマス and it's pretty cool.

First of all, あなた can't actually visit Hogwarts, it's protected and it's not a believing thing, not even in the story. The letter is the key.

And yes, they only allow eleven-year-olds to newly enter.

YA

あなた do realize that Hogwarts was created によって J. K Rowling? For her books? It's not real. It's fiction. That's all it is. So, basically, no matter how hard あなた believe, it will never happen. And people believing it will happen really need to have a big dose of reality and their heads examined.