I like to look and analyse urban places. And I’m always, in the back of my head thinking about the lack of green open spaces in Athens and how much the city could improve (quality of life for citizens etc) if there were more parks.
Also, Luxembourg should be making a lot more parks in the city and outside the city. Plan early.
Christos Floros 
Do you have a picture of Luxembourg? Where did you get the pictures?
Hi Michael, I used Google Maps to generate the pictures and highlighted green zones. Sorry I didn’t screengrab Luxembourg!