April O'Neil and Raphael sitting next to a tree near Oslo.
Oslo, up to 1 January 1925: Christiania, is the capital city of Norway.
Teenage Mutant Ninja Turtles[]
Much of the episode Northern Lights Out of the 1987 TV series is set there. In the beginning, the Turtles watch April O'Neil covering the alternate energy conference in Oslo. They later encounter Eric the Red-Eye and his henchmen, tracking them to their underground village.