One Nationwide Plaza is a 40-story skyscraper in Columbus, Ohio that serves as the corporate office headquarters of Nationwide Mutual Insurance Company. It is part of the complex of buildings known as Nationwide Plaza. Nationwide outgrew its famous 246 Building by the 1970s and work began on a new headquarters for the company. In 1977, the 146 m (485 ft) building was completed. The building is located at the corner of N. High Street and what is now Nationwide Blvd. on the northern edge of downtown Columbus, Ohio.