The Clock Strikes Midnight
The moment in the Cinderella fairy tale where the carriage begins to turn back into a pumpkin and mice.
I never thought of the magic in Cinderella's carriage as "melting" away before but it's very appropriate to the tale to show it this way. Glass slippers, ice-cold hearts and melting magic... this would make an awesome Winter tale.
You can see more amazing ice sculptures HERE, including a couple more from Cinderella's story.