The first <a href="https://en.wikipedia.org/wiki/QRpedia" class="extiw" title="en:QRpedia">QRpedia</a> code sticker in Sofia Zoo
Katerina Zareva, <a href="//commons.wikimedia.org/wiki/User:EERC_Sofia_Zoo" title="User:EERC Sofia Zoo">EERC Sofia Zoo</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>