Architectural Digest has a new article online where they interview Stuart Craig, the Harry Potter set designer. Stuart has shared with them a bunch of never before seen sets from Harry Potter and the Deathly Hallows: Part II and how he designed them.  Those photos may be seen in the gallery.  Some of the descriptions may be read below, the rest can be seen in the article.

Part of the Battle of Hogwarts takes place in the school’s entrance hall, which was redesigned for the scene. “This is one example of how things just evolve and how Hogwarts changes from one movie to the next,” says Craig. “In the final battle, it’s required that the statues jump down and take part in the battle. So we needed to change the look of the entrance hall.” [accompanying photo]

Harry, Ron, and Hermione escape Gringotts on the dragon, crashing through the levels of the bank, including the marble hall shown in this concept drawing. Craig notes that, like the sets, the creatures have evolved. “Harry Potter, in its ten-year period, spanned quite a bound in technology. At the beginning, we would have done most things physically—even some of the creatures were sculpted full size and operated as animatronic creatures. Toward the end of the process, they became digital constructions and brilliantly real.” [accompanying photo]