I came across some photos of New York's Park Avenue through the years. The first one looks awesome - very exotic compared to today's city areas. It reminds me of those dystopia stories in which nature has overcome mankind and the cities are all overgrown with plants and inhabited by wildlife. Having such places in cities would be quite nice.
(I've heard one of the squares in Linz is to be turned into something similar, much to the dismay of car drivers. Let's hope it will see the light of day.)
Continued working on one of the WIPs: