Nuno Viegas and Norwegian artist Ståle Gerhardsen have completed “Play Attention,” a collaborative mural for the eighth Festival Infinito in Cascais, Portugal. Painted in spray paint across an approximately 17.5-by-7.4-metre wall, the work brings together Viegas’s anonymous adult figure and Gerhardsen’s more playful characters. Small figures climb, hang from and move around the central body,…