Production Designer Stuart Craig was on hand today at Warner Bros. Studio Tour London - The Making of Harry Potter to reveal one of the best kept secrets of the tour: the incredibly detailed model of Hogwarts castle used in the films.
Rowan Atkinson attends the UK premiere of Johnny English Reborn at The Empire Leicester Square on October 2, 2011 in London, United Kingdom. (Photo by Dave Hogan/Getty Images)
A Sotheby's employee holds a rare 52.82-carat white diamond ring at Sotheby's auction house on April 12, 2010 in London, England. Price: 7 million USD. (Photo by Dan Kitwood/Getty Images)
Sir Paul McCartney and Nancy Shevell leave the Marylebone Registry Office after their civil ceremony marriage on October 9, 2011 in London, England. (Photo by Danny Martindale/Getty Images)
The original costumes for Star Wars character Darth Vader stand on display at “Star Wars: The Exhibition” at County hall on May 04, 2007 in London, England. (Photo by MJ Kim/Getty Images)
Billy Zane and Jasmina Hdagha attend the world premiere of Titanic 3D at The Royal Albert Hall on March 27, 2012 in London, England. (Photo by Dave Hogan/Getty Images)