The club whose guests are told to evacuate immediately and then mocked for having nowhere to go.
The instant Scolopendra stirred, a planetwide message advised all current guests of the Scolopendra Club to evacuate immediately — followed at once by "Oh, I'm sorry. There's nowhere for you to go?"
The follow-up messages did name a refuge: the sixteenth floor, Agony Mirrors, which sits outside Scolopendra's layers and is safe from any impending attacks. Reaching it requires passing through the seventeenth floor, The Backstage Death Maze, which was still being built even as it ran. The announcement ended with "Good luck," and then the system confirmed Scolopendra had awakened.
The venue whose entire guest population becomes prey the moment Scolopendra wakes.