Doric columns inside the cathedral of Syracuse (Natività di Maria Santissima). Originally Athena's temple, 480 BC. The walls around the 7th century AD.
<a href="//commons.wikimedia.org/wiki/User:Zde" title="User:Zde">Zde</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>