<p>Düsseldorf
</p>
<ul><li><a href="//commons.wikimedia.org/wiki/File:Flag_of_Germany_and_Austria.svg" class="image"><img alt="Flag of Germany and Austria.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Flag_of_Germany_and_Austria.svg/25px-Flag_of_Germany_and_Austria.svg.png" decoding="async" width="25" height="17" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Flag_of_Germany_and_Austria.svg/38px-Flag_of_Germany_and_Austria.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Flag_of_Germany_and_Austria.svg/50px-Flag_of_Germany_and_Austria.svg.png 2x" data-file-width="2700" data-file-height="1800"></a> Tonhalle</li></ul>
<a href="//commons.wikimedia.org/wiki/User:HJW" title="User:HJW">Hans-Jürgen Wiese</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>