It was built on part of the area previously occupied by the Church of San Salvatore in Thermis.

In the lower part, the walls are lined with seventeenth-century walnut-wood choir seats taken from a seminary in Ancona and a big lectern stands in the centre of the room. The door frames in ancient veined marble were moved from Palazzo Giustiniani. The circular seamless wrought-iron chandelier was made by Alberto Gerardi (1889-1965).

This room houses busts of Luigi Einaudi, Vittorio Emanuele Orlando and Francesco Saverio Nitti.