The hall is the direct witness of the works situation of the Juvarra period at the moment of its interruption. The architect Andrea Bruno, knowing the plan, thanks to the painting made by Marco Ricci and Massimo Teodoro Michela, decided not to complete it. At the north side of the Castle there are the strong pillars wanted by Juvarra, while on the porphyry pavement, the marble and stone slates draw the positions of the supports and the directions of the bays, never realized. The imposing wall of the Castle shows its supports and decorations never made, the niches for the statues and the big closed holes that remember the great spaces projected by the Sicilian architect. In the higher part, there is the sticking out panorama, made of crystal and steel, a contemporary insertion by Andrea Bruno. At the other side there is the Manica Lunga, the Castellamonte’s building born to host the gallery of the Duke Carlo Emanuele I, that, following the Juvarra projects had to be destroyed, it has been the centre of the restoration campaign started in 1986 as it is possible to read on the date put on the wall. The building today has great windows opened by Andrea Bruno where there was the big hole left by the interrupted demolition.