I keep noticing themes with my photos and in my Venice collection I noticed quite a few images with bell towers in them.
One thing I have learned to appreciate are the bell towers found in the cities of Italy. They are great for figuring out where you are and what monuments are near by. In Venice it was super helpful having so many around the city as location points. It also helped that we were staying down the street from one so it wasn't hard to get lost. With all the crazy streets that sometimes have dead ends it's very helpful to have them to look up too. If you're ever going to Venice, figure out if where you are staying is near one and go from there.
An iconic photo of Venice Saint Marks Campanile and Doges Palace. The bridge to the right is where you can have a view of the Bridge of Sighs.