Fortification heritage refers to the historical and cultural aspects of military buildings and fortifications used for defense and protection in the past. Unfortunately, most of the fortification heritage is today in a neglected state and without a purpose. Models of revitalization of cultural objects include strategies for the restoration and revitalization of spaces or buildings, with the aim of preserving their historical and cultural value while adapting to contemporary needs. These models may vary depending on the type of building, its condition, cultural and historical importance, and planned purpose. There are positive examples in practice, one of which is the revitalization of Fort Verudela and its conversion into a tourist attraction, Aquarium Pula. This revitalization is the result of the vision of the scientist and entrepreneur Milena Mičić, who gathered numerous enthusiasts and experts in the field of fortification architecture and created additional value to the tourist offer of the city of Pula with her own resources. It is necessary to act on future revitalization projects by combining various factors and stakeholders. Through the exchange of experiences and knowledge, it is necessary to appropriately include the fortification heritage in the tourist offer and shape it as a tourist product. Understanding the fortification heritage once and today helps us in understanding its development, significance and ways of preserving and adapting these objects in the modern context.