Kay Nietfeld / AFP - Getty Images

Industrial climbers clean window elements of the Kaiser Wilhelm Memorial Church on April 19, in Berlin.

Kay Nietfeld / AFP - Getty Images

Cleaners work on window elements of the Kaiser Wilhelm Memorial Church on April 19, in Berlin.

To restore the original luminance of the windows of the Kaiser Wilhelm Memorial Church in Berlin, more than 16,000 glass mosaics are being washed with hot water high-pressure cleaners. The old church, built between 1891 and 1895, was damaged and destroyed during air-raids in 1943. A new church, whose windows are being cleaned now, was constructed between 1959 and 1963 after plans of Egon Eiermann. Parts of the old church were conserved and serve as a war memorial.

Fred Ramage / Keystone Features via Getty Images, file

The ruins of the famous Tauenzien Strasse and the Kaiser Wilhelm Memorial Church in Berlin on July 20, 1945, following Hitler's defeat in World War II.

Andreas Rentz / Getty Images, file

The Kaiser Wilhelm Memorial Church on Oct. 22, 2010 in Berlin, before it underwent a much-needed renovation.

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