Apparently, a 2015 <a href="https://en.wikipedia.org/wiki/hackathon" class="extiw" title="w:hackathon">hackathon</a> in <a href="https://en.wikipedia.org/wiki/Florence" class="extiw" title="w:Florence">Florence</a>.
<a href="//commons.wikimedia.org/wiki/User:Giaccai" title="User:Giaccai">Giaccai</a>
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<span class="int-own-work" lang="en">Own work</span>