The Distinctive Baritone said: "The original Kinky Boots used a design similar to Sweeney Todd's, with a revolving giant cube that could represent various interior locations, with the top of it being Sweeney's barber shop/Charlie's office. Not what you were asking exactly, but the set piece was a near-constant presence onstage in both productions."
I had to Google the Kinky Boots set because I couldn't recall what you described, but after seeing some pics, I remember it. As you said, it's not exactly what I was referring to, but it is an interesting design.
==> this board is a nest of vipers <==
"Michael Riedel...The Perez Hilton of the New York Theatre scene"
- Craig Hepworth, What's On Stage