[maxldn]

Not sure. 30% sounds like a lot. The streets in central Amsterdam _might_ have 30% cover if you don’t count the water, but what about the houses, gardens, etc?

[gpvos]

True, but then I wonder how other cities get that high without essentially being a park with a few buildings dotted here and there.

[Windchaser]

trees over roads, parking lots, etc.

But then, as you scale towards higher density (e.g., replacing parking lots with garages), you end up with less space for trees. Unless you put them on top of buildings, ofc.