When the new COSI opened, there was an area named Cityview because of the beautiful view of the city of Columbus it had. It was between the 1st and 2nd floors on the Adventure corner of the building. Cityview originally contained COSI's new pendulum and contained a TV showing inside Adventure I believe you could zoom in with (bottom picture on this page).

The main thing in Cityview was an exhibit called the History of COSI. This area had many things from COSI's past, including pictures, the projector from the Battelle Planetarium, 4 working old computers (The Lemonade game, face painting game from KIDSPACE, train safety game, and one more), and much more. It also had details about COSI's changing through the decades. The pendulum would be moved to the front of COSI around 2004 (in keeping with COSI's traditions). The rest of the area would sadly be closed because of financial difficulties. It is the only area that I am aware of which has never been reopened to the public.