Griffincyde

Saw an anime in the mid 90s on the sci-fi channel where demons disguised as princes would open up a staircase into castle and take 3 (i believe) princesses to their realm to dance. There were trees and foilage made of gold and gems and someone follows them down to rescue them. It was drawn in a serious style, not cartoony or big eyed. Can't remember the name or any other details. Anyone know the name?