The castillo de Santa Ana, also known as Castillo de Las Roquetas, is a fortification built between the 16th and 17th centuries, located in the town of Roquetas de Mar which was used for refugee to the inhabitants who lived near the port. It has an oblong shape. Near the castle there is a lighthouse.
The 1804 earthquake destroyed most of the structure, and only survived one of the towers and the raised level area, which has been conserved and recovered.
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.