The lower level of the tower is a small store that sells postcards, souvenirs and Buddhist paraphernalia.
Here is a photo of the tower from 1980
There is a second bell tower in the monk's complex to the left of the main courtyard which is generally not accessible to the public and which is used on a regular basis. This tower is used only for special occasions.
Follow this link to see a photo of the bell tower taken in 1904.