Even prisons are subject to Norway’s requirement that every building receiving public money have some sort of public art. Here, a mural by the pseudonymous graffiti artist Dolk in an exercise yard at Halden Fengsel. &lt;a href=&quot;http://www.nytimes.com/2015/03/29/magazine/the-radical-humaneness-of-norways-halden-prison.html&quot;&gt;Related Article&lt;/a&gt;