Reflection of the sky on glass windows on the side of the building of the Planetarium of Thessaloniki. The sky and its reflection look like one surface, drawn with silver lines which create geometrical shapes (mainly rectangles).
<a href="//commons.wikimedia.org/wiki/User:Annatsach" title="User:Annatsach">Annatsach</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>