Magnificent Coca Castle was built in the 15th century by Alonso de Fonseca, a mighty archbishop of Seville, during the reign of King Enrique IV of Castile. It's made up of two square baileys separated by a passageway. Both show polygonal towers at the corners. The double walls are 2.5 m thick and it's circled by a deep dry moat.
Coca castle is a mixture of western and Moorish military architecture, as can be seen from its decoration. It has a square ground plan, a moat and two walled enclosures, which gives it the air of impregnability for which it has been known over the centuries. The keep is located in the second area. It is made of brick and its walls are profusely decorated. The interior is very luxurious and lavish, and conserves its Mudejar decoration. Due to its great splendour, it was used more as a palace than as a fortress. It is one of the crowning works of the military Mudejar style.
The castle is owned by the Alva family and now serves as a training center for foresters. Their school is situated in the inner bailey.
Duino Castle was built by the Wallsee family in 1389 on the cliffs overlooking the Gulf of Trieste. It replaced an older castle from the 11th century. Over time, the Wallsee family disappeared and the castle, after having been used as a prison, became the residence of the Luogar and Hofer.
At the end of the 19th century it became the property of Prince Alexander von Thurn und Taxis from the Czech branch of the House of Thurn and Taxis. It remains with the family to this day with his great-grandson Prince Carlo Alessandro della Torre e Tasso, Duke of Castel Duino the current owner. The castle has been opened to the public as a museum and park.