San Felipe Castle is a defensive construction in a predominantly Neoclassical style. The first castle was built during the reign of Felipe II and it was redesigned between 1731-1775. It is one of the most representative examples of the major 'fortified batteries' of the 18th century. It was used to defend the Ferrol tidal inlet and for land offensives. The castle has a system of protruding walls, covering the flanks of the lateral walls. It follows the academic model of its time - the Enlightenment - in this case, through the application of mathematics to the art of war. It has a geometric layout and stonework. It was designed by the military engineers Francisco Montaigú, Juan de la Ferriére and Juan Vergel.
There are magnificent views from the castle, particularly for the tidal inlet and the A Palma castle. The building was recently acquired by Ferrol Council and will be renovated and refurbished for cultural use.
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.