The following categories are entitled to a free ticket: Accompanying persons in need of assistance. ICOM members with current membership. Certified tour guides. Staff of the Special Projects Unit and Fabbrica del Vapore. In case you need a ticket for your companion or in case you belong to one of the above categories, contact us, enclosing a document certifying the need for an assistant or a badge. Once we receive the document, we will provide you with a voucher code that you can use to purchase a free ticket. Keep in mind that you will need to show your ID/badge, along with your tickets, to gain access to the venue.