Is this the biggest HT system ever?

I wonder how much the the A/C system cost to cool the room with at least 15 tube Macs! ... Or is this an expensive sauna?

As far as cabling...it looks like the photo is an "in progress" photo taken after placemnt of equipment and before final hook-up. I'm still impressed, but I still want to know about the HVAC system to keep the viewer comfortable.