I was looking
here, and the person mentioned Kamchatka. Someone in the comments said that no one knew about Kamchatka outside of the game Risk. Now, while I've heard the word "Risk" used to refer to a board game, I've never played it, but I
have heard of Kamchatka.
When I was in the middle school, I read Harry Potter fan-fiction (including poorly written romance fics), but I found an
extremely long one that took place partially in Kamchatka. Other than that, I don't really remember much, other than the fact that Harry was inexplicably taken to Russia with Dumbledore by accident, they found a girl wandering around, and Lupin, but at the time, I thought it was fantastic. It was long enough to be an actual book, and while I might not feel the same way about it if I were to read it now, I thought it was just great at the time.
It had a sequel, which I believe was even longer, that involved an exchange program to a Chinese wizarding school. Part of the story took place with Harry and the others in China, while the other half took place at Hogwarts.
Anyway, that was a LOOOOOOOOOOONG time ago.
Here's a link to both the stories.
I forgot about the Lupin romance part, but that stuff is obviously obsolete since ... you know, J.K. Rowling finished the series. Still, I thought it was fascinating when I read it, and you might too.
Speaking of Harry Potter fan-fiction, I remember this one story; it was
so dark. Harry's mental connection with Voldemort became so strong that when he went to sleep, he'd actually see Voldemort killing people--and he was killing a lot of people. Percy was working for the Ministry, and the Ministry was trying to make it look like Harry was doing it, even though Harry was half dead due to the fact that he couldn't go to sleep without experiencing horrible things. I think the story was never finished while I was interested. The last thing I remember is that in one of Harry's dream-experiences, he saw a family being killed. A little girl was hiding under a bed or something, and she could see Harry, even though he wasn't there, and she asked him to help. That was where the chapter ended, and if it ever continued beyond that point, I never saw it.
There was another one, which might actually be the same one I mentioned above. Harry is being beaten by the Dursley's, and I think Snape saves him. There was some vague explanation that Muggles can use some ancient form of magic based on hatred or something, and they had to use this extremely painful method of magical extraction to literally pull the Dursley's hate out of Harry's body. Snape was uncharacteristically caring in it, I believe, but you'll find that anything is possible in fan-fiction.
I remember when fanfiction.net used to allow x-rated stories. And you could limit your searches to them. Cough. Not that I did that, because had I done so, I would have been completely unable to find the aforementioned fanfics. Cough.