How They Make the Crazy Detailed Sets on Game of Thrones

"It’s interesting, because people always assume that these places exist already," says Deborah Riley, the production designer for Game of Thrones. "But every single detail has to be mulled over again and again and again by all of us."

Riley, who's worked on the show since its fourth season and has won an Emmy each year since, is the mind behind the show's sweeping sets — both at the show's Belfast production hub and on location.