Game of Thrones: Inside the production design

Winter has finally come to Westeros.

Fans all over the world are bracing for the final season of HBO's cultural phenomenon, 'Game of Thrones.'

"It's exciting, it's thrilling, it's dangerous, and you never know what's gonna happen," said one fan.

A show unlike any other on television, the series has changed traditional notions of what T.V. can be.

"The word television doesn't work anymore. It's long form storytelling, it's something but it's not T.V. as we used to know it," said 'Game of Thrones' production designer Deborah Riley.

'Game of Thrones' has become ubiquitous, parodied in cartoons and referenced in politics as one of the most watched television shows of all time.

"It is global. You know that it's a success because you can't do a parody if nobody's watching it," said the show's executive producer Bernadette Caulfield.

Speaking in Washington, D.C., Riley and Caulfield gave fans an insider's guide to fantasy world-building.

"It's interesting to create a new world, and to me, Westeros is as real as anywhere else," Caufield said. "We're not American, we're not European, we're a world that anybody can belong to."

For fans, the show's creative team, and film scholars alike, it's the scale and realism of this magical universe that has set a new bar for Hollywood production

"For me to have that sort of production value and that level of storytelling, I think what 'Game of Thrones' has done in terms of putting this level of production on the screen has put everybody else on notice," said American Univeristy artist-in residence Russel Williams.

But in the end, it's all about the characters, the stories, and the legacy of the world they leave behind.

As for how this story ends.

"They're gonna love it, it's all I can say- I can't tell you, I'd have to kill you," Caulfield joked.