These AMAZING cake creations definitely take the castle theme to the fantasy level!  Many of these cakes likely were constructed over a few days as fondant was rolled and faux bricks were made with a rolling tool. Castle towers can be sculpted from things like rice krispie treats wrapped around pipes or they can be made from non-edible components that are just wrapped in fondant.  Prince charming and princess figurines can be constructed from marzipan, fondant or even modeling chocolate.  

The intricate details of these cakes can make them quite expensive.  That said, a more affordable option would be for the designer to create an elegant tiered cake fit for a princess and then use a beautiful fairytale castle cake topper like the one shown to the right from Wedding Favors Unlimited.  The glazed porcelain castle makes a great wedding day keepsake and it says "And They Lived Happily Ever After" along the base.

And don't forget to use a castle themed cake serving set and guest book.  You can get a fully coordinated fairytale castle bridal set that includes the toasting flutes, cake server, guest book and pen set from Wedding Favors Unlimited as well.