An Episcopium is the Latin
word for an episcopal
palace. It is a broad term used to signify an ecclesiastical figure and their administration. Episcopium emphasizes “an essential unity between his [the bishop’s] person, power and place.” In medieval Italy Episcopium were frequently part of a complex connected to the Baptistery
In Rome the Basilica of St. John Lateran housed the Lateran Palace. This was the principal Episcopium of medieval Rome. Although Pope John VII (705-07) built an Episcopium upon the Palatine Hill.