It should be noted that this is a "composite" photo, typical of that era.
Incredible! I was aware of the mechanics of Photomontage, it being a lesson taught in Photo-Arts back in the day, but I had no idea of the commercial applications such as this...to which I answer myself: "Of course they would!"
This is now a case of wondering not where the pic was taken, but "where have I seen this kind of montage before?" Of course, really old books from over a century ago. The type your pored over as a youngster, wondering why the pics just 'didn't look quite convincing'.
lol...and of course: "Where is Lord-Viscount Waldo?" Just as Sergeant Pepper was recorded on a four-track master from many layered-up tracks 'bounced' onto the final master, so were these pics. The differing resolution gives it away as to what was layered in last, on both Sgt Pepper and this pic.
I'm going to be staring at this one for some time...
P.S: I'm noticing some 'panes' that must have been delineated by sections added in/over-top of earlier developments. As to whether that would be done with negs or prints is a good question. Two are apparent in the right side of the pic, follow down the lines described from the panel and archway on the rear wall.
Now I'm trapped in the pic, I've got to find out more as to how these were assembled, and how many 'generations' are typical in this type of collage (Print of a print, etc)
I also wonder if a 'pencil touch-up' was used between generations, quite common for the day. (Again, whether that's done on the neg or the print is a good question)
Wow...