The landmark building has been renovated to include a food hall, residential spaces, and World Cup shopping to attract more downtown activity.

The Atlanta icon's legacy includes pioneering cable television through his Turner Broadcasting System and CNN, transforming the Atlanta Braves into “America’s team," supporting environmental efforts through Captain Planet and funding the United Nations Foundation.

Ahead of the World Cup, Atlanta leaders announced the ATL Culture House, a new venue highlighting local arts and creativity downtown.

To mark the anniversary, more than 500 CNN alumni gathered downtown in front of the iconic red letters that will be relocated to the company's Techwood location.

The historic CNN Center in downtown Atlanta that has served as the global headquarters for the 24-hour news network for decades is up for sale,...