The main space is highlighted by a linear sequence of rooms along the south elevation, dominated by the "Sala das Bicas", a grand vestibule paved in marble. The ceiling is paneled with an allegorical composition of carved flora and 18th-century polychromatic azulejo ashlars, completed in the last quarter of that century. In the space one can observe along one wall two round marble fountains with lion heads, which give the space its name. In addition, the space is surrounded by eight jasper busts on plinths, representing Roman emperors.