

Interiør fra Rosenborg Slot. 1921. Danish. Oil on canvas. Signed and dated Christian Tilemann-Petersen 1921 on the lower left. Image source; bruun-rasmussen.dk. Artwork itself in the public domain in the United States because the artist has been dead over 80 years. via https://commons.wikimedia.org/wiki/File:Christian_Tilemann-Petersen_-Interi%C3%B8r_fra_Rosenborg_Slot-_1921.png

Castle interior. 1908. Danish. Oil on canvas. Image ©2021 Artnet Worldwide Corporation. Artwork itself in the public domain due to age. via http://www.artnet.com/artists/christian-tilemann-petersen/castle-interior-h-72m2h6gL071kJlyAmx9Q2
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