The Queen Mary Dark Harbor transforms the legendary ocean liner in Long Beach into one of the most atmospheric Halloween haunts in Southern California, running select nights through October 2026. The Queen Mary — a genuine 1930s ocean liner moored permanently in Long Beach Harbor — provides a setting for Halloween horror that no purpose-built theme park can replicate: actual labyrinthine corridors, real engine rooms that extend seven stories below the waterline, and the documented paranormal history of a ship that has been called the most haunted vessel in the world. Dark Harbor deploys the ship's actual spaces as haunt zones — mazes run through the boiler rooms and engine …