| 1980 | The Cobb-Marietta Coliseum & Exhibit Hall Authority, a corporate and politic body, is created by the General Assembly of Georgia, pursuant to 1980 Georgia Law 4091. |
| 1991 | Authority commissions KPMG Peat Marwick to conduct a feasibility study for a convention center and performing arts centre. |
| June 1992 | Construction begins on Cobb Galleria Centre, a 280,000 gross square foot convention center featuring 108,000 square feet of exhibition space, a 25,000 square foot ballroom and 20 meeting rooms. |
| January 1994 | Cobb Galleria Centre opens. |
| October 1995 | Cobb Galleria Centre reports an operating profit during its first full year of operation. |
| October 1996 | The Cobb-Marietta Coliseum & Exhibit Hall Authority acquires an 11-acre tract of land located at Akers Mill Road and Cobb Galleria Parkway. |
| 1997 | Cobb Galleria Centre is recognized as one of the busiest convention centers in North America. |
| 1998 | A pedestrian sky bridge opens over Cobb Parkway, connecting Cobb Galleria Centre with Cumberland Mall and the Sheraton Suites Galleria. |
| December 1999 | The Cobb-Marietta Coliseum & Exhibit Hall Authority acquires the Galleria Specialty Shops, an 188,000-square-foot entertainment, restaurant and retail mall. |
| 2000 | The Gallery, a special events venue, opens in the Galleria Specialty Shops. |
| 2001 | Cobb Galleria Centre food and beverage services become an in-house managed operation. |
| January 2002 | Cobb Galleria Centre expansion is completed with the addition of a fourth exhibition hall of 36,000 square feet and a 650-space, five-level parking deck. |
| November 2003 | The Cobb-Marietta Coliseum & Exhibit Hall Authority announces plans to build a performing arts centre on an 11-acre site located at Akers Mill Road and Cobb Galleria Parkway. |
| September 2007 | The Cobb Energy Performing Arts Centre debuts with a grand opening gala and a performance by Michael Feinstein and Linda Eder. |
| January 2009 | Cobb Galleria Centre celebrates its 15th anniversary and 15 consecutive years of profitability. |