At the far end of the MuppetVision 3D queue is a curious wall that just begs to be explored. In true Muppet fashion, it uses reverse psychology to invite the viewer to do just the opposite of what is asked.
If you peek through the peepholes (which of course, you can't help but do!), you'll find pipework. Normally, this would be hidden completely from guest view, but here the not-so-glamorous is embraced and given a Muppet makeover with hilarious results.