He is arguably the most famous documentarian in America, and he could have parlayed that fame into becoming a mogul of documentary filmdom, producing documentaries for multiple TV outlets and even theatrical release. But Ken Burns prefers the cozy environs of PBS, for which he has been producing and directing award-winning documentaries since 1981. What does he get in return for his loyalty to that one, single outlet? For him, it’s the greatest gift of all: Total creative freedom.

He also gets the kind of showcases for his work that other TV producers can only dream about. Burns’ newest documentary -- a six-part, 12-hour-plus epic history of the U.S. national park system, “The National Parks: America’s Best Idea” -- will premiere Sunday, Sept. 27, and dominate PBS primetime for six consecutive evenings. He talked to The Wrap about why he prefers to keep things small and what’s up next.

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