I have been looking for an old anime movie I use to watch when I was about 8 years old. All I remember it being about is a boy who is trying to defeat a wizard of sorts... or evil man with mystical powers. At the end they fight on a castle that pulls from the ground and beings to fly away. Does anyone know?

Might be Castle in the Sky
Tenkû no shiro Rapyuta (1986) (http://www.imdb.com/title/tt0092067/)