View of the ruins of the <a href="https://en.wikipedia.org/wiki/Hadrian%27s_Library" class="extiw" title="w:Hadrian's Library">Hadrian's Library</a>, Athens, from south. Here is visible the <a href="https://en.wikipedia.org/wiki/tetraconch" class="extiw" title="w:tetraconch">tetraconch</a>, the remains of an early byzantine church built in the court of the library
<a href="//commons.wikimedia.org/wiki/User:Jebulon" title="User:Jebulon">Jebulon</a>
<span class="int-own-work" lang="en">Own work</span>