Arcos de Jalón Castle, dating from the 14th century, stands on the site of an old Arab fortress. It was besieged in the 14th century by the supporters of the Castilian King Pedro I, who fought against the rebel D. Fernán Gómez de Albornoz, supporter of his bastard brother Enrique de Trastamara.
This castle has a rectangular floor plan although it is quite irregular due to the fact that it adapts to the rugged land of a high and narrow hill that divides the town into two parts. A robust keep is attached to the castle walls which are made of thick stonework, horizontal brick rows and ashlar with stonecutter’s marks on the corners. There is only one entrance which is located high up and two loophole windows.
Inside there are remains of the structures that divided the tower, which once was taller, into different floors, and all throughout the perimeter, you can see where the foundation walls began and some towers that reinforced the structure.
This fortress is so unique due to the double-lined brick walls, a technique that mainly had a structural purpose, but has also given the castle beautiful reddish lines between the stonework. This construction method has a clear Mudejar origin which was most likely influenced by the amount of Muslims in the village and in the area of Aragon.
References:The ancient Argos Theater was built in 320 BC. and is located in Argos, Greece against Larissa Hill. Nearby from this site is Agora, Roman Odeon, and the Baths of Argos. The theater is one of the largest architectural developments in Greece and was renovated in ca 120 AD.
The Hellenistic theater at Argos is cut into the hillside of the Larisa, with 90 steps up a steep incline, forming a narrow rectilinear cavea. Among the largest theaters in Greece, it held about 20,000 spectators and is divided by two landings into three horizontal sections. Staircases further divide the cavea into four cunei, corresponding to the tribes of Argos A high wall was erected to prevent unauthorized access into the theatron and may have helped the acoustics, but it is said the sound quality is still very good today.
Around 120 CE, both theaters were renovated in the Roman style.