A little while ago, I had the tremendous opportunity to design the exterior to the Count's Castle for Sesame Street as Art Director at Magnetic Dreams Studio.
I based it on a number of his previous castles (on-air sets, book illustrations, theme park attractions) and situated it in the middle of a park, a la Belvedere Castle in Central Park.
It's finally seeing the light of day in this Sesame Street: Trick or Treat DVD and you can see it in action in the promo here:
A look at the full model:
And, a comparison of the final lighting and rendering by Don Culwell and compositing by Rhea Borzak: