https://www.weforum.org/videos/22035-athens-is-building-pocket-parks-to-tackle-heat-and-pollution/
Converting unloved plots into vital breathing space.
pocket parksathensbuildingtackleheat
https://www.untappedcities.com/hidden-pocket-parks-in-south-slope-nyc-squeezed-between-expressway-and-row-houses/
Along the bend of the Prospect Expressway in South Slope, Brooklyn NYC are a series of pocket-parks, with narrow entrances hidden behind houses.
pocket parkssouth slopehiddennycsqueezed