One of the new features in the Campanile is the Ghost Bells which can be seen as one climbs up to the top of the tower. The Ghost Bells are installed under the actual 25-bell carillon (the original 23 plus the two new bells) and light up during chiming or when visitors press keys on an interactive silver console keyboard. The Ghost Bells aren't just in the same position, they're also the same size as the real bells. Looking at the photo the two new bells are marked with red.
The Ghost Bells interactive keyboard
On the wall is a plaque with details of all the bells in the carillon containing info on the donor who sponsored each bell, the bell's number as well as the inscription on them.