The Arkham Knight Incident
Batman entered Bruce Wayne's office on the top floor several times throughout the night. His visits usually consisted of asking Lucius Fox for technical advice, such as tracking the Arkham Knight through his broadcasting channels.
Later, Fox dropped off the radar, which caused Alfred to worry about his safety. As the top floor was locked, Batman had to enter throughout the building through the elevator. Upon arrival, he learned that the security was breached by Hush, angry at the Waynes for ruining his life. He took down Hush, and requested Fox to lock him into "the vault", as he couldn't brought onto the GCPD without harm to Bruce Wayne.
- The building is one of the only locations visible in every (main) game, with others being the buildings at Arkham Asylum.