chilling in a hammock on a nice summer day is something is something that even the most avid shadow hunter may be inclined to do. even more so if the hammock is a net and casts a nice shadow to boot.
there are a couple of such hammocks at a park/playground in Tøyen which is a part of Oslo. parents with small kids can relax here as their kids are playing in the playground. but you don't need to have small kids to kick back on the hammocks.
and best of all, you don't even have to sit on them to enjoy their shadows