The Fat Lady's Corridor is a passage on the seventh-floor of Hogwarts Castle, about five minutes away from the Divination corridor, and is accessible from the seventh-floor corridor and the North Wing. Classrooms 7B and 7C are located off of the corridor. The corridor's namesake hangs at the very end of the corridor, concealing the entrance to Gryffindor Tower. After Sirius Black's attack on the Fat Lady, Cadogan took her place, and security trolls were later stationed there to protect her once she was returned.