Begun in the 16th century by Hernando de Vega over remains of a 10th century castle, the Grajal de Campos Castle was finished by his son Juan de Vega y Acuna, count of Grajal. Designed to withstand the use of artillery the castle has sloped walls and its overall height is lower than those of earlier castles, making it difficult and hard to target by cannon fire.
The Grajal de Campos Castle has a square plan with four corner towers covering all blind spots and it is located on the western edge of the village over a small hill. In this same village there is a renaissance palace owned by the same counts which is said to be linked by an underground tunnel with the castle.
To this day, the castle belongs to the actual Duke of Alburquerque, its interior is dismantled and can be visited.
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.