Sundial in Prague at the Student Courtyard in <a href="https://en.wikipedia.org/wiki/Clementinum" class="extiw" title="en:Clementinum">Clementinum</a>
<a href="//commons.wikimedia.org/wiki/User:Balaban" title="User:Balaban">Balaban</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>