San Francisco's Department of Building Inspection got 24 complaints about the giant light-up "X" sign Elon Musk placed on the headquarters of the company formerly known as Twitter, the department's ...

A giant flashing "X" sign was installed Friday on top of the building formerly known as Twitter headquarters in San Francisco without the permission from the city, prompting an investigation by area ...

Building signs have grown into a $37.5 billion industry. Some have become so iconic they are permanent parts of the landscape, often standing in for their hometowns. Credit... Supported by By Jane ...

The flashing “X” sign above the San Francisco building formerly known as Twitter’s headquarters has been removed, video shows, days after it went up and caused complaints about the nighttime display.