The Jolly Jack Candy Factory is an abandoned candy factory within futuristic Gotham City of the 2040s that was used as a hideout by the Joker and the Jokerz criminal organization in Batman Beyond: Return of the Joker.
The candy factory located at 691 Broome Street, was closed down in 2025 A.D., and sat abandoned for nearly 2 decades.
When the Joker reemerged after being believed to be dead, he worked out of the abandoned factory with the help of the Jokerz gang.
Terry McGinnis, the new Batman, found this particular lair of the Jokerz gang and stopped the Joker himself from initiating his plans of his destructive reign over Gotham City with the deadly fire power of the Hyperion-class Satellite.
The factory was destroyed when the beam of the Hyperion-class Satellite hit it. The Batman with the weakened Tim Drakes, as well Bruce Wayne's dog Ace and the rest of the Jokerz gang members including the Dee Dee Twins made it out alive.