Yes, there are additional fees for special tours at Milan Cathedral. These fees vary depending on the type of tour requested and can range from €2 to €7 per person. For instance, a guided tour of the cathedral’s interior costs €2 per person, while an audio-guided tour or visit to the rooftop terrace costs €7 per person. It is also possible to purchase a combined ticket which includes access to both the interior and rooftop terrace for €9 per person.