Castillo de Cea originated between 866 and 879 in the Castile and León province of León, with the most prominent surviving element being a three-story 15th-century tower complete with interior rooms. The castle ruins retain visible sections of original medieval walls and a moat, commanding beautiful views across the landscape from its elevated position within the municipality. Designated as a bien de interés cultural (cultural heritage monument), the fortress exemplifies early medieval Iberian fortification design and continues to be an important landmark in the historic region of León.