A water <a href="//commons.wikimedia.org/wiki/Category:Well_heads" title="Category:Well heads">well head (<i>puteal</i>)</a> in Venice — in front of the <a href="//commons.wikimedia.org/wiki/Scala_Contarini_del_Bovolo_a_Venezia" class="mw-redirect" title="Scala Contarini del Bovolo a Venezia">"Contarini del Bòvolo"</a> (i.e. "of the snail") spiral stair.
<a href="//commons.wikimedia.org/wiki/User:G.dallorto" title="User:G.dallorto">Giovanni Dall'Orto</a>
Attribution
<span class="int-own-work" lang="en">Own work</span>