Frederick Wiseman, at 85, brings his signature documentary technique to one of the last pockets of true ethnic and economic diversity in the city: Jackson Heights, Queens.

A Wiseman film has no interviews and no narrator; you’re plunged into whatever world he’s selected. But there are linking threads here, including the LGBT community, business owners fearful of gentrification and rising rents, and immigrants, including a Mexican woman who recounts how her daughter wandered lost in the desert for two weeks while trying to cross the border.

It’s more than three hours long, and much of it is entrancing. But Wiseman’s evident fondness for the minutiae of bureaucracy, and for people who make long comments at community meetings, won’t be shared by everyone.