CBS Columbia Square was the home of CBS's Los Angeles radio and television operations from 1938 until 2007. Located at 6121 Sunset Boulevard in the Hollywood neighborhood of Los Angeles, California, United States, the building housed the CBS Radio Network's West Coast facilities, as well as CBS's original Los Angeles radio stations, KNX and KCBS-FM. KNXT-TV, Channel 2 moved into the complex in 1960, and the CBS's West Coast network operations were based there until it moved to the larger CBS Television City in November 1952.Wikipedia