In Berlin in comparison only 30% of the city area is green spaces and woodland, totaling ~260km2.
One of the reasons why Berlin population is 1.2 times larger than Rome, even though the surface of the city is only 70% of the Italian Capitol.
I have not seen ANY good examples of comparisions between cities, but I know these problems comes up alot when we discuss cities here on HN.
As a Roman, I also thought that Paris or Berlin were greener or bigger, they are not.
> You have to show these things on a map
Here it is
Berlin and Rome, same zoom level on Google maps
I've highlighted on the left the area that is actually Rome's territory, Google maps only highlights the area inside the "Grande raccordo anulare" [1], but the city of Rome extends much farther than that, also the area on the beach (the one called Ostia) is actually part of the city even though it is disconnected from it.
That's Rome, the city, then there's the Metropolitan City of Rome Capital [2], which is much larger and includes many smaller municipalities around it, which is in turn smaller than Rome metropolitan area [3]
[1] https://en.wikipedia.org/wiki/Grande_Raccordo_Anulare
[2] https://en.wikipedia.org/wiki/Metropolitan_City_of_Rome_Capi...