 The penthouse was occupied by the Raymond Loewy-designed Top of the Sixes restaurant, operated by Stouffer's, which closed in 1996.The building officially opened on November 25, 1957 in a ceremony led by Mayor of New York City Robert F. Wagner Jr.. Before the building opened, it was 80% leased to office tenants including Foster Wheeler, Warner Bros., Revlon, Helene Curtis Industries, Benton & Bowles, Ted Bates & Co, and American Export-Isbrandtsen Lines while Marine Midland Bank operated a branch on the ground floor.Additionally, Prudential Financial had agreed to purchase the building before completion and lease it back to Tishman for 88 years.