World Behind the Mirror

World Behind the Mirror is a world featured on ABC's Once Upon a Time. It is the place where Sidney Glass was imprisoned during his time as the Magic Mirror in service to Queen Regina. At least three decades Regina and her friend, Emma Swan, were trapped in the world herself by their former enemy, the Evil Queen, Regina's serum counterpart. 
Category:Once Upon a Time locations
Category:Villain lairs
Category:Prisons
Category:Worlds
Category:Realms
Category:Fantasy locations