Denver 2017 - Convention Center, GFOA Conference Sign

Outside of the Convention Center, where the conference was being held, was this sign welcoming all of the conference-goers.  Hilariously, it appeared immediately before the graphic in this picture:

Having grown up in the 60's and 70's it grabbed my attention, though I never took to the drug culture in those days.  Out of (my) curiosity we decided to pay one of these a visit.  It was most depressing.  Though the sign outside advertised that what was sold inside was for medical and recreational use, upon entering we found a clinical, sterile atmosphere with people sitting on benches against a cinder block wall waiting to go into a door where the product was sold.  Nothing on the walls, no color (except puke green).  Very depressing...