The Salesforce Tower in San Francisco.
"The images will be very abstract - clouds, ocean waves," Mr. Campbell said. "I don't like street scenes much because they have the feel of a security camera." But he's also experimenting with prerecorded images, including dancers from Alonzo King Lines Ballet, a local company.
"A typical model for public art is that you deal with the surroundings - the community and the environment," Mr. Campbell said. "That has to be thrown away here. You can't even see 'Day for Night' from the immediate surroundings. The skyline is the context."
