Aide board at SPIIRAS building at Vasilyevsky island line №14 in <a href="https://en.wikipedia.org/wiki/Saint_Petersburg" class="extiw" title="en:Saint Petersburg">Saint Petersburg</a>.
<a href="//commons.wikimedia.org/wiki/User:Dinamik" title="User:Dinamik">Dinamik</a>
<span class="int-own-work">Self-photographed</span>