The Penguin maintained a War Room within The Museum near the Torture Chamber. On the floor, he had a mega map of Arkham City with all territories and icons to mark them. Here, he planned to win the Arkham Gang War and take control of Arkham City.
He had three display cases: one for the imprisoned Mr. Freeze, one for the Joker and the third for Harley Quinn. He also had a container of the Titan Formula stored in the back.