This detached three-bedroom house (T3) is located in the heart of a stunning rural landscape, nestled among rolling hills and offering breathtaking views and a remarkable sense of harmony with the surrounding nature. The property combines the elegance of modern design with the historical charm of an old ruin, creating a unique fusion between the new and the old. The house was built within the structure of an ancient ruin, preserving the original stone walls and adding a touch of history. There are countless features that make this property truly unique, where every detail was carefully considered by the current owners. Highlights include high-end window frames providing excellent thermal and acoustic insulation, an open-plan living room with a modern European kitchen, large windows, and vaulted ceilings, offering abundant natural light and magnificent panoramic views. The master suite, along with the other two bedrooms, boasts generous spaces, air conditioning, and built-in wardrobes. In addition to over 11,000 m² of land, the property features a wooden deck terrace connected to the living room—perfect for relaxing, enjoying nature, hosting barbecues, or making the most of the fantastic and rare natural swimming pool. This biological pool blends perfectly and harmoniously with the landscape, giving the impression of a natural lake. Surrounded by stunning natural beauty, the property also includes trails for outdoor walks. Along with parking for several vehicles, the property also offers a 40 m² garage with an electric gate and a bathroom that serves the pool area. Located in a privileged setting and deeply connected to nature, this home reflects strong environmental responsibility. With a high energy efficiency rating (Class A), the property includes a deep water borehole, a biological wastewater treatment system, and a water softening unit, making it self-sufficient in both water and energy. A perfect opportunity for those who value high standards, comfort, serenity, and sustainability—a true countryside retreat with easy access to major roads and only 1 hour and 30 minutes from Lisbon.