Lasers in the lounge. Source: https://netzpolitik.org/2015/netzrueckblick-32c3-der-vierte-tag/ CC_BY
Lasers in the lounge. Source
https://netzpolitik.org/2015/netzrueckblick-32c3-der-vierte-tag/
CC-BY
The main hall on the ground floor is occupied by communities of hardware hackers, makerspaces and hackerspaces, their gear and LED displays. The adjacent hall is turned into a night club with electronic beats, sliced open caravans and laser lights.

On the floors above are the main halls for the talks. The surrounding hallways and cloakrooms are the territory of the assemblies, base camps for people who feel affiliated with each other for one reason or another, such as the Anarchist Village for (crypto)anarchists and cyberpunks or the Python assembly for enthusiasts of that language.

The event runs entirely on volunteers, or angels as their called in CCC lingo. There were 1350 angels who put in 15,000 work hours together on a population of approximately 12,000 congress visitors (nobody seems interested enough in this number to mention it anywhere, which is in stark contrast with other metrics such as bandwidth usage which was displayed on monitors throughout the building).