Which city is the primary setting of Christopher Nolan’s Insomnia?

The primary setting of Christopher Nolan’s Insomnia is Nightmute, Alaska.

Nightmute is the fictional Alaskan town where the film’s murder investigation unfolds. Los Angeles detective Will Dormer travels there with his partner to help local police investigate the killing of a teenage girl. The town’s extreme summer daylight contributes to the film’s psychological atmosphere.

Although Insomnia was filmed in Alaska, Nightmute is not presented as a fully documentary portrait of a real location. The fictional setting allows the story to focus on isolation, unfamiliar local conditions and the disorienting effect of continuous daylight.

The title refers both to sleeplessness and to Dormer’s inability to escape his moral unease. Nolan’s film is a remake of Erik Skjoldbjærg’s 1997 Norwegian film, but it relocates the story to Alaska and features Al Pacino, Robin Williams and Hilary Swank.