Who's Who: The Fortress of Solitude Featuring the original Citadel, the 1949 Fortress, and the 1958 version Supermanica: Fortress of Solitude Supermanica entry on the pre-Crisis Fortress of Solitude Google Sketchup/Earth Model of the Fortress of Solitude Supermanica: Secret Sanctuary Supermanica entry on the Secret Sanctuary Comic Coverage: The Fortress at 50 Superman's Fortress of Solitude, a short story by Rick Stoeckel Fictional elements introduced in 1958 Superman Arctic in fiction Fiction about alien zoos Solitude Fictional museums Fictional secret bases DC Comics locations Fictional buildings and structures originating in comic books sv:Stålmannen#Utrustning