08.17.2018 - By San Francisco Chronicle
A child plays on a lighted floor at the Salesforce Transit Center on Sunday, Aug. 12, 2018 in San Francisco, CA. People walk by an art piece of moving words at the Salesforce Transit Center on Sunday, Aug. 12, 2018 in San Francisco, CA. John Grunstad arrives at the Salesforce Transit Center on Sunday, Aug. 12, 2018 in San Francisco, CA. Jesleen, 6, and Jaival Walter, 2, (foreground) and June Tenney, 7, Miles, 4, and Elizabeth Sckolnick, 7, at the Salesforce Park on Sunday, Aug.