The Grey House at 3 Jerozolimska Street was erected in 1925. It was occupied by the management of the cemetery, used by the Jewish Religious Community in Kraków, and by the Chevra Kadisha Burial Society. In the time of operation of KL Plaszow, it contained offices of the camp management, and a prison in its basement. After World War II, the building was used as a social and private apartment block. The Grey House is now included in the area of KL Plaszow Museum, in line with the agreement made between the Jewish Religious Community in Kraków and the city authorities.