“The master plan calls for the Memorial Arts Building, which opened in 1968, to be dismantled or have its space reconfigured or renovated, and be replaced by four free-standing, but connected, buildings surrounding an expansive pedestrian plaza that would extend to the Peachtree sidewalk. Those structures are the new Atlanta Symphony Orchestra concert hall, the Alliance [Theatre] expansion, the Alliance auditorium and the current Symphony Hall, to be renovated and used for arts and education functions or rental.”