Very early in my Warsaw stay I came across large cubes in Nowy Świat and Krakowskie Przedmieście. Each one contained a reproduction of a painting by Canaletto the younger.
I was intrigued by the presence of an Italian painter in Warsaw in the 18th century, although I quickly discovered that he wasn’t the Canaletto, but his nephew. However his influence has stretched into the 20th century. He cruised around royal courts, painting scenes of streets and castles, and his meticulously detailed paintings were used to reconstruct both Warsaw and Dresden after the devastation of World War 2.
The Castle contains a number of these paintings in the Canaletto Room. Only two of the original paintings are missing, which is pretty astonishing given the history of Warsaw over the last two centuries. Napoleon removed four canvases in 1807, and the Emperor Nicholas of Russia absconded with the lot in 1832, as did the Germans in 1939. They were retrieved in the aftermath of WW2 and restored to the reconstructed ante-room to the audience chamber in 1984.
In the Canaletto room they serve almost as wall panelling, and are therefore rather hard to scrutinise individually, especially the ones at ceiling height.
At floor level, there is a mock-up painting on an easel, showing how Canaletto painted: strainer; support; ground (red and light beige, applied with a brush and polished); under-drawing in pencil using a camera obscura, transferred to the canvas and water-coloured; and finally painting with oils (a thin layer to give the overall tone, under painting the basic colour, modelling with impasto, glazes to produce a glow, placing the figures in the landscape, and finally varnish.)
I was particularly interested in the paintings that feature places I know well. These images are from Wikipedia Commons.
Footnote: I have discovered that Canaletto is buried in the first church I braved in Warsaw, the Church of the Transfiguration.