tile panels at Jardim Zoológico metro station, Lisbon, Portugal
<a href="//commons.wikimedia.org/wiki/User:Eugenio_Hansen,_OFS" title="User:Eugenio Hansen, OFS">Eugenio Hansen, OFS</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>