It is always worth looking up. I hadn't noticed this tower at a canal house at the Prinsengracht in Amsterdam before.
The building dates from 1890 by architect Ed. Cuypers and the facade is built in neo-renaissance style. It used to house the Amsterdam Milking Device.
The facade is richly decorated with a frieze.
Here a closer look, the image happens to be a milk bacchanal.
The facade however is the only thing that has left of the original building, behind this a modern office building has raised.