"Carl Gotthard Langhans (15 December 1732 – 1 October 1808) was a Prussian master builder and royal architect. His churches, palaces, grand houses, interiors, city gates ...
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and theatres in Silesia (now Poland), Berlin, Potsdam and elsewhere belong to the earliest examples of Neoclassical architecture in Germany. His best-known work is the Brandenburg Gate in Berlin, national symbol of today’s Germany and German reunification in 1989/90." - (en.wikipedia.org 15.12.2019)