<a href="//commons.wikimedia.org/wiki/Cathedral_of_Pisa" class="mw-redirect" title="Cathedral of Pisa">Cathedral of Pisa</a>, detail of the wall (southeast, near leaning tower)
<a href="//commons.wikimedia.org/wiki/User:Lucarelli" title="User:Lucarelli">Lucarelli</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>