Well, how about this one: https://en.wikipedia.org/wiki/%C3%85gesta_Nuclear_Plant#/med...

This is from Swedens Ågesta Nuclear Plant, the first in the country.

I don't really get why you'd need all the used floor space. That seems to really be the key difference from those early control rooms and more modern ones. The old ones had you walking around and the new ones are designed to keep you seated. Still, it seems like the old ones had an excessive amount of floor space.

Heat dissipation and gracious distances for installation and servicing.