With a direct link to the church for liturgical offices of morning and evening prayer, it originally contained only the abbot´s individual cell, adjoining the transept and with access to the Treasury. With the construction of the new dormitories, in the 16th and 17th centuries, this space was completely modified, to contain the apartments of the Abbot-General, the Royal Archives, the Registery, the Old Manuscript Library and the General Library.