English: A fresco by Cesare Maccari (1840-1919) depicting Roman senator Cicero (106-43 BCE) denouncing Catiline's conspiracy to overthrow the Republic in the Roman senate. (Palazzo Madama, Rome). Note: illustrations commonly show the senators arranged in a semicircle around an open space where orators were deemed to stand; in reality the structure of the existing Curia Julia building, which dates in its current form from the Emperor Diocletian, shows that the senators sat in straight and parallel lines on either side of the interior of the building. The Senate was also larger and more dull.