You won't really understand what happened to the divers in World War II! So this restored Physiko submarine will help you understand the conditions in which divers went through that period. It is a narrow place, in which an estimated seven people were present for a long period of time, possibly up to a month or more. Knowing that once you pay 5-7 euros you can see this submarine, in addition to that you can see the military museum next to it.