In this Wednesday, Feb. 1, 2017, photo members of the Triforium project, from left, Jona Bechtolt, Claire Evans, Tom Carroll, and Tanner Blackman, pose for a photo with Joseph L. Young’s Triforium a “polyphonoptic” public sculpture at the Fletcher Bowron Square downtown Los Angeles. For 40 years Joseph Young festooned public buildings, open spaces and private places across his adopted city of Los Angeles with dozens of brilliant, larger-than-life artworks.