Headquarters (HQ) denotes the location where most, if not all, of the important functions of an organization are coordinated. (http://en.wikipedia.org/wiki/Headquarters)
Now you know it. This is my little messy place where all the brain work is done ;)
P.S. We have a heat wave here in Slovenia. Temperatures around 36°C (96.8°F) don't have positive influence on my productivity.