I've been looking through my old LEGO collection and rebuilding a few choice sets. This castle is '6087: Witch's Magic Manor' from Fright Knights (1997/8) although I didn't know it then! a
LEGO 6087 Witch's Magic Manor - YouTube
Steve's LEGO Blog: The Lego Fright Knights 1997 -1998
LEGO MOC The Wizard of Oz - witch castle by Aventurium | Rebrickable - Build with LEGO