The city of Stockholm has a fairly simple but rigid policy against street art: There is no such thing. If someone were to paint something on a wall, then it is not art - it is vandalism - and shortly thereafter the city will, by means of high-pressure wash - ensure that it is nothing at all. Therefore Stockholm is mostly devoid of street art, unless you go look in the places where nobody looks.
Lima, either for policy reasons, or other priorities, is different. Not only did I see lots of street art - it was of a much higher quality and with greater variation in style than the Stockholm art I've seen.
