Today I took a quick stop at the Tacoma Central Police Substation, Sector One at 1524 Martin Luther King, Jr. Way.  What attracted me to the building was the stones in a metal cage art, of which there are at least three.  I’m not finding information on them, though they seem to be designed to be educational.  I did find this document about other art at local police stations.

http://www.tacomaculture.org/arts/resource/TA_PUB_Police.pdf