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Around the Bend... Twice!
(i.imgur.com)
A Community for the interessting world of Trams, Trolleys and Streetcars!
This picture seems to be taken in Norrköping, Sweden. The newly built tram in Lund connecting central station, the engineering faculty campus and the research facilities MAX IV and ESS has 'green' tracks as well.
pretty sure there are parts in gothenburg with grassy tram tracks as well, definitely parts with succulents and whatever manages to survive in the ballast.