Wicked Witches Haunt
Sadly, Wicked Witches Haunt was the worst effected by the fire of July 2000. The ride was completely destroyed, leaving just the shell of the building. As a result, it had to be demolished. Originally called Phantom Fantasia, improvements were made in the mid nineties and it was renamed Wicked Witches Haunt. Being one of the parks signature attractions at the time, it was a great loss.
If you ever visit Europa Park in Germany, make sure you ride 'Geisterschloss' or 'Ghost Castle'. It is very similar to Wicked Witches haunt and may bring back some fond memories.