One of the fun things film can do that digital cameras cannot is the art of a double exposure. In film, a double exposure is achieved when the film is exposed twice - with two different images - creating a composite on the negative.
As a photographer, this is rather fun, because you don't know what the outcome will be until you've gone home to develop the film. In this case, I had to wait almost two weeks after taking the images before I could leave Venice to return to my developing studio. The wait was worth it, and I was excited by the resulting images.
Here's a quick shot to introduce the concept - the first image was of the gondolas along the grand canal. The second image was with my Leica camera in the scene.
Shot with a Rolleiflex 2.8F on Ilford Delta 100 Pro film.