<p>Marcel Duchamp's "Fountain"
</p>
(It is actually a replica of the 1917 original)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/94064020@N00">JasonParis</a> from Toronto, Canada
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/jasonparis/3623831113/">Philadelphia, PA</a>