<p>The headquarters of Købstædernes Forsikring at 1 Grønningen in Copenhagen, Denmark. Designed by Henning Hansen and built 1906 / 1933. Seen from Kastellet
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Apparently the headquarters of an insurance company (<a rel="nofollow" class="external free" href="http://kab.dk">http://kab.dk</a>) in operation since 1761.  That's before confederation, in the middle of the Seven Year's War, folks.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/26344918@N04">David Huang</a> from Copenhagen, Denmark
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/vitamindave/4765295167/">Købstædernes Forsikring</a>