The Chaos Communication Congress is the annual four-day conference organized by the Chaos Computer Club. The congress offers lectures and workshops on a multitude of topics and attracts a diverse audience of thousands of hackers, scientists, artists, and utopians from all around the world.
For this congress I designed the basic theme and all the propaganda related to it like the website, webbanner, wallpapers, shirts, stickers, the proceedings and so on.

Here you can see the Congress Wiki.