The Castle of Coca is located in the town of Coca, Segovia province, in the Castile and León region of central Spain. Built in the 15th century during the reign of Alonso de Fonseca, it exemplifies the Mudejar style, which integrates Islamic and Gothic influences.

Architecturally, the castle is known for its intricate Mudejar brickwork, featuring decorative patterns and geometric designs typical of Moorish architecture. Its defensive features include double walls that are 2.5 meters thick and a deep, dry moat surrounding the structure. The castle comprises two square baileys (courtyards) separated by a passageway, each adorned with polygonal towers at the corners.

Despite its defensive purpose, the Castle of Coca is distinguished by its elegance and grandeur, resembling more of a palace than a fortress. This design reflects its dual role as a residence and a symbol of authority and power during its time.

Culturally, the castle is a significant landmark, showcasing the artistic and architectural achievements of the Mudejar style in medieval Spain. It stands as a testament to Spain's rich history and architectural heritage, attracting visitors who come to appreciate its unique blend of Moorish craftsmanship and Gothic elements.

The Castle of Coca has undergone restoration efforts to preserve its historical integrity and is accessible to visitors through guided tours, offering them the opportunity to explore its interior, learn about its history, and admire its architectural features up close.