Marten Trotzigs Grand
As known, Marten Trotzigs Grand is the narrowest street in Sweden, which is named.
This street is in the Gamla stan.
As you see the picture in 2006 on wikipedia, the wall of this street is beautiful. But current status is not good so much in my opinion.
I understand that it is challenging to combine with graffiti and old city. I am sorry to say that, but this is not a succeeded work.
Gamla stan is the old city of Sweden. You can travel through the townscape of medieval Europe.