Mirror <a href="https://en.wikipedia.org/wiki/ambigram" class="extiw" title="en:ambigram">ambigram</a> ΝΙΨΟΝ ΑΝΟΜΗΜΑΤΑ ΜΗ ΜΟΝΑΝ ΟΨΙΝ (<a href="https://en.wikipedia.org/wiki/Nipson_anomemata_me_monan_opsin" class="extiw" title="en:Nipson anomemata me monan opsin">Nipson anomemata me monan opsin</a>, <i>Wash your sins, not only your face</i>) inscribed in ancient Greek upon a holy water font outside the site of <a href="https://en.wikipedia.org/wiki/Hagia_Sophia" class="extiw" title="en:Hagia Sophia">Saint Hagia Sophia church in Constantinople</a>. All the letters are symmetrical vertically, with the N stylized Ͷ in the right part, as a result the sentence is not only a <a href="https://en.wikipedia.org/wiki/palindrome" class="extiw" title="en:palindrome">palindrome</a> but also a mirror <a href="https://en.wikipedia.org/wiki/ambigram" class="extiw" title="en:ambigram">ambigram</a>, that can be read the same way in either direction. The  phrase was firstly written on the apex at the entrance of the church, and is attributed to <a href="https://en.wikipedia.org/wiki/Gregory_of_Nazianzus" class="extiw" title="en:Gregory of Nazianzus">Gregory of Nazianzus</a>.
<p><a rel="nofollow" class="external text" href="https://www.flickr.com/photos/37886168@N07">Christina Kekka</a> from Athens, Greece
</p>
<small>Light correction by <a href="//commons.wikimedia.org/wiki/User:Basile_Morin" title="User:Basile Morin">Basile Morin</a></small>
CC BY 2.0
This file was derived from: <a href="//commons.wikimedia.org/wiki/File:Gregory_of_Nazianzus_(4919335562).jpg" title="File:Gregory of Nazianzus (4919335562).jpg">Gregory of Nazianzus (4919335562).jpg</a><br>