As comparison with the original photo of the question:
(source: tagesspiegel.de)
The dark colors of the building was caused by coal dust, since in that area coal was the main form of heating until the late 1970’s.
Sources:
This is the Schloss Charlottenburg (Charlottenburg Palace), a Baroque palace in Berlin.
(Image: Creative Commons Attribution-Share Alike 3.0 Unported license; Author: ernstol)
Credit:stackoverflow.com‘
5 Mar, 2024
4 Mar, 2024