These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Nightmare Fuel: The whole section of Horror is able to give you the willies, but the transformation of Dr. Jekyll (and his Mr. Hyde form) traumatized many, many children who saw this film.
The scene where the ceiling paint is dripping down. Just looking at the giant wizard's face MELTING traumatized many kids.
The Moby Dick sequence also was creepy: Dark red sky, almost demonic-looking sailors and Captain Ahab maniacally yelling on the front of the rowboat.
Richard & Co. looking over the side of the boat, and seeing the whale rising up at them.
The demonic paint dragon created from the molten ceiling.