Rainbow at the Alster river in Hamburg, Germany. In the center of the picture: <a href="//commons.wikimedia.org/wiki/Hamburger_Kunsthalle" title="Hamburger Kunsthalle">Hamburger Kunsthalle</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/91576944@N00">Petra Kohlstädt</a>
CC BY 2.0
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