However, Superman reveals his secret identity to Lois Lane, because he wants to spend his remaining time with her. Lois initially refuses to believe that Clark and Superman are the same person. For her birthday, Superman takes Lois to the Fortress of Solitude, where they have dinner in a stateroom of the RMS Titanic, which Superman has raised and restored. During this visit, he also tells Lois that she can explore the Fortress save for one room he is constantly checking. Superman's furtive behavior heightens Lois' suspicions and she becomes paranoid. She attacks Superman with a Kryptonite laser, but his enhanced powers have rendered him immune to it.