The new light installation by artist Jim Campbell atop the Salesforce Tower will turn on permanently starting Tuesday night.
As the last daylight faded away, Campbell hit a few keystrokes to switch on the installation. The tip of the tower lit up and the figures of two sepia-toned dancers appeared to maneuver across the tower's top six floors. The crowd, gathered in the bar for the initial test of the installation, broke into applause while Campbell sipped a glass of wine and watched his creation come to life.
