The main concert hall at the Schermerhorn Symphony Center can be converted over into a ballroom. The seats are moved, section by section, to an area below the room. The whole process takes about an hour and a half. Watch it in this short time-lapse video:
One person noted on Reddit that they’ve worked on this process before:
I’ve been part of what they call “flipping the floor” many, many times. It can be a pain in the ass, like when something breaks down during a flip at 3AM after a 15 hour work day, and the floor needs to be flat for a 9AM event. There have also been some pretty big f***ups over the years.. like people rising up the lift from the basement before the section of chairs had completed rolling back into storage… yeah that was fun.