Discovery Green celebrates Houston’s unsung heroes in tree projections The tree trunks are strung with festive white holiday lights, but Craig Walsh's projection effects are so eerie some people may want to run the other way. Molly Glentzer December 14, 2020Updated: December 15, 2020, 1:41 pm Faces are projected onto the trees that are the winter art installation "Monuments" at Discovery Green Thursday, Dec. 10, 2020 in Houston. The work, designed by Australian artist Craig Walsh, features giant slow-motion video projections of unsung Houston heroes who were nominated by the public onto the canopies of five trees at the park. Photo: Brett Coomer, Houston Chronicle / Staff photographer