A unique and historically rich property is offered, ideal for private rehabilitation projects, investment in rural tourism, or a training center. It is a sieve mill whose semi-ruined structure maintains the roof on 80 cm walls of golden slate. It requires a comprehensive interior renovation. The estate has an approximate extension of 5 ha. of private riverside forest along 2 km of the Bornova river with exclusive access and unparalleled views. A golden slate weir runs through the estate to a historic stone dam. Adjacent to public woodland, it offers a peaceful environment and connection with nature. It is located in a starlight area, offering perfect possibilities for observing the night sky and astronomical tourism. We have current and renovated plans for: - Single-family home with indoor spa-pool and observatory. - Charming small rural hotel with 6 rooms and two cabins among the trees. - Training center with two apartments, 11 rooms, 4 multipurpose rooms, spa-pool, two cabins, restaurant, dining rooms, and other services. We have a technological feasibility plan for self-sufficiency and passive house. All of this complies with the regulations of Castilla la Mancha and the Natural Park. Additionally, we have a approved project for the rehabilitation of the caretaker's house on a ruin in an adjacent estate as an auxiliary dwelling or additional project. An opportunity for investors and nature lovers: this property is ideal for those seeking a rehabilitation project with heritage value in a protected environment. Its natural characteristics and its location in the Natural Park make it a unique opportunity for tourist, educational, or residential projects.