Columbus Center is a 357 ft (109m) tall skyscraper located at 100 East Broad Street in Columbus, Ohio. It was completed in 1964 and has 25 floors. It is the 12th tallest building in Columbus and was the tallest constructed in the 1960s. The building served as the headquarters of Bank One prior to its merger with First Chicago NBD, and was known as the Bank One Tower. The building was designed by the architectural firm Harrison & Abramovitz and it follows the international architectural style. The Columbus Center also employs a curtain wall facade system.