An ancient medieval castle, now in ruins, located on a hill overlooking the Flumen River, between Almuniente and San Lorenzo del Flumen. Although only the remains of walls and some basic structures remain, the site holds great historical value and offers unobstructed views over the Monegros mountains and the cereal plain. Accessed via wide rural trails, ideal for mountain biking or gravel riding, it's a perfect spot to stop, take photos, and enjoy the contrast between ruins, history, and the vast landscape. Highly recommended if you like uncrowded but soulful places.