ClaustraAlpiumIuliarum is a late Roman defense system that protected the passages to the heart of the Roman Empire. Archaeological remains of the system span from Rijeka in Croatia to the Posočje in Slovenia; the barriers purposefully follow natural features of the rugged terrain. Claustra represents an outstanding example of integration of architecture within the natural environment which experiencing is closely connected to the experience of nature as the archaeological remains are mainly located in wooded areas that often overlap with protected natural&woodland areas. But stakeholders of this heritage are fragmented, remains are not properly conserved, displayed & accessible, there is also a need to increase their visibility as a common destination of cultural&green tourism. The project provides a set of activities for the development of the tourism product CLAUSTRA. It includes the preparation of guidelines for its development, promotion plan, design of the cultural-touristic route & related itineraries, systematic promotion of the product (including a mobile app) & the development & implementation of a rich program for visitors (cross-border public events, experiential tours). In order to develop an integral product & for a stable management of the route it will be set up by bottom-up approach the CLAUSTRA consortium which brings together all relevant stakeholders & local economic operators. The second set of activities is to improve the attractiveness of the destination CLAUSTRA. This will be achieved through active conservation & enriched presentation of the archaeological remains & the implementation of measures to enhance the physical&informational accessibility, including the creation of three didactic info points. We will so increase the touristic development of the program area & set up one of the most attractive destinations in this region of Europe which may be on par with abroad counterpart destinations such as HadriansWallCountry or GermanLimes.