Not a set. It's a place called the Aragon ballroom in Chicago. Very famous and on the National Register of Historic Places. There is a stage, but that wasn't in use that night. Just an AIDS awareness fundraiser with several thousand ravers going until about 8 AM. Here's a another shot

of the
truss being assembled and you can kind of see the room. I couldn't stay too late into the party. I still had to rig another party for the next night at another venue. So one crew was ripping fixtures out of there at 8 AM, and driving them over to here

for the next party. That's a pix from Saturday night at about 10 pm. The doors had just opened and we were still hanging some specials for the entryways and aiming some lekos on the bar area. I climbed down a ladder and backed into a guy with butt-less leather chaps on.
The next day we had to rip everything out and get it loaded on a truck by 2 PM. And we were 2 crew short. Not fun. I didn't sleep for nearly a week.