 The CID, a self-taxing district, has raised millions and has completed several infrastructure improvements in the area since its inception.During the summer of 1994, the Cobb-Marietta Exhibit Hall and Coliseum Authority built the $48 million Cobb Galleria Centre by renovating the existing mall there, and it has become another success for the district.A few small shopping centers were constructed in the mid-1990s, and a Cumberland Mall expansion and renovation was completed in 2006.