“Nightmare in National City” Filming Locations

Nia makes a hard journey to find the Totem of Dreams before Nxyly and Kara struggles with her work-superheroing balance.

Supergirl episode “Nightmare in National City” was filmed in Vancouver in Canada.

Robert H. Lee Alumni Centre (UBC) as National City Dream Institute (interior)

Nxyly follows the advice of her new gauntlet to find a way into the Dream Realm but the Super Friends' interruption leads to the release of a nightmare monster.