Surveying at the roof of <a href="https://de.wikipedia.org/wiki/Johann_Puch_Museum_Graz" class="extiw" title="de:Johann Puch Museum Graz">Puchmuseum</a> in Graz, Austria
<a href="//commons.wikimedia.org/wiki/User:TheRunnerUp" title="User:TheRunnerUp">TheRunnerUp</a>
<span class="int-own-work" lang="en">Own work</span>