Still, (entirely) green lawns in Europe are a result of cutting the lawn all the time. If we give it more time to grow between each time it’s cut it’ll grow into a colourful oasis of all kinds of flowers that are both beautiful and allow insects to thrive. It doesn’t always make sense - if you want to lay down on the grass for a nap you’d rather have an even surface of grass and relatively fewer insects - but there’s too many green lawns around here as well.
My family started transforming the lawn in my childhood home into a field of flowers a few years ago, and the transformation is fantastic. Every year there are new flowers popping up. When cutting the lawn it helps to leave the cuttings a couple of days or so to dry, so that the seeds have a chance to fall off and enter the soil.
The tram track in the bottom picture looks like it’s doing good. A bunch clovers, and they probably won’t discourage other wildflowers as/if they appear. There seems to be some white flowers there already.
I imagine a very swampy tram track would attract a lot of mosquitoes to urban spaces, so chances are it wouldn’t be very popular. But I like the idea.