ThreeT seeks to improve the performance of 8 policy instruments to protect and enhance natural and cultural heritage by setting up thematic trails or improving existing ones, making them accessible to all through green modes of transport and readily available information. The ultimate aim is to maximize the eco-tourism potential of heritage sites. Partners share the challenge that sustainable accessibility to those sites is limited by lack of material links open to sustainable transport modes and of adequate information to ensure their visibility. This adversely affects strategies for a place-based, sustainable development of regional economies, since the potential of those sites is not being efficiently utilised. To address such challenge, partners’ relevant experience will be shared and jointly analyzed. A minimum of 20 documented good practices will be earmarked, tailored to the specific needs of each partner and suitably fed into the Programme Policy Learning Platform. The experience learning will ultimately result in 8 Action Plans drawn. Main benefits for the participating regions are: - Public accessibility and forms of sustainable enhancement of cultural and natural heritage improved. - New practices on green mobility, intermodality and innovative information adopted. - Effective system for monitoring the Action Plan to assess the actual influence of its actions on regional development strategies. -Increased competence and skills of partner staff and key-stakeholders. The project privileges a bottom up approach for Action Plan formulation with key-stakeholders being involved in all project activities. Their contribution by implementing the planned actions is expected to act as a strong multiplier lever for benefit sharing and territorial cohesion of local communities. The Stakeholder Groups established in the project will constitute a permanent forum to ensure a durable impact related to the project issue and consequent actions planned/implemented.