Where do vampires go when they die?

Twilight answer: It depends. If you are under Edward's point of view, they go nowhere. If you think like Carlisle, they go the same place as humans. When they are ripped up and burnt, well, they are the ashes so where ever the ashes go then so do they.

Other answer:

I have no idea.

the other answer is hell. Vampires are usually demon-possessed beings. They go back where they came from.