“Wikimania is the annual conference celebrating Wikipedia and its sister free knowledge projects with three days of conferences, discussions, meetups, training, and workshops. Hundreds of volunteers and Free Knowledge leaders from around the world gather to discuss issues, report on new projects and approaches, and exchange ideas.”

If you’re a Wikipedian, or want to know more about how Wikipedia and related projects work, this is the biggest yearly gathering of contributors, developers, academics, and researchers you can find.

https://wikimania2017.wikimedia.org/wiki/Wikimania