A row of wooden columns in the centre of the hall supported a panelled coffer ceiling and underpinned the double span-roofs.
The hall was damaged during the Prussian bombardment of Prague Castle in 1757 and then was restored by Nicolò Pacassi who removed the central columns.
In that time the niches in the southern wall were walled-up and the painter Norbert Kryštof Saeckel decorated them with illusive landscape views with ruins.
Contrary to the Rudolphian freely modelled stucco it consists of plaster castings additionally fixed on the walls and the ceilings.
[1] The two shorter walls, with galleries, were built in 1860s and are decorated with sculptures of Art, Science, Trade and Industry by Auguste la Vigne.