Großmarkt Hamburg. <a href="https://en.wikipedia.org/wiki/de:Wikipedia:Projekt_Hei%C3%9Fluftballon" class="extiw" title="w:de:Wikipedia:Projekt Heißluftballon">Projekt Heißluftballon</a>
<a href="//commons.wikimedia.org/wiki/User:Martina_Nolte" title="User:Martina Nolte">Martina Nolte</a>
CC BY-SA 3.0 de
<span class="int-own-work" lang="en">Own work</span>