I just came across this:
There’s a rule of thumb that a building is considered attractively slender if it has an aspect ratio (which is to say, height to width) of 8:1.
Who came up with that? Is there an iconic building of precisely that ratio?
And what is the most attractive ratio of street width to building height? I seem to recall, from the Haussmann era in Paris, that the height of the streetwall was two-thirds the width of the street. Or was it the reverse?