The CBS Building in New York City, also known as Black Rock, is the headquarters of CBS Corporation. The building, opened in 1965, was designed by Eero Saarinen. It is located at 51 West 52nd Street, at the corner of Sixth Avenue (Avenue of the Americas). The 38 story building is 490 feet (150 m) tall and measures approximately 872,000 rentable square feet (81,000 square meters). The interior spaces, as well as the furnishings, were designed by Saarinen and Florence Knoll.