The unusual dome of the church "Axion Esti" in Axioupoli, Greece. (It is "unusual" due to both the special architecture of the building and the variety and technique of the pictures which decorate it.)
<a href="//commons.wikimedia.org/wiki/User:Annatsach" title="User:Annatsach">Annatsach</a>
<span class="int-own-work" lang="en">Own work</span>