Engine of the paddle steamer <i>Wilhelm Tell</i>, out of service since 1970 and since 1972 used as a static restaurant ship in Lucerne
<a href="//commons.wikimedia.org/wiki/User:Gestumblindi" title="User:Gestumblindi">Gestumblindi</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>