 Generally, the form of the presbytery has an architectural form; its design is dictated by an exterior form, which were hallmarks of many of the works of Jerónimo de Ruão, much like the presbytery of the Jerónimos Monastery.The presbytery has rhythmic marble walls with pilasters, surmounted by a vaulted-ceiling, with painted panels, guarding a gilded retable and altar with the image of "Our Lady of the Conception".The rectangular sacristy, which is accessed from the northern narrow corridor, is abutted by a rectangular courtyard.