Castello Barbarossa is an archaeological ruin and ornithological station on the island of Capri. It derives its name from the pirate and Ottoman admiral, Hayreddin, nicknamed Barbarossa ('Redbeard'), who stormed it in 1535 and destroyed it in 1544. The construction date is uncertain but it perhaps dates back to the late ninth century. From 1898, the structure, now in ruins, was owned by the Swedish psychiatrist Axel Munthewho donated it to his foundation. The surroundings, interesting for their botanical features, are home to the island's ornithological station.
The plan of the castle is quadrangular with a semicircular wall. The ruins of the highest part, as well as forming the core of the building, belong to what was once the residential area of the castle. Indeed, there is a chapel with a vaulted apse, a belfry and a cistern that was used as a warehouse Another area, offset from the chapel, retains many features, including a vaulted roof, a small partly walled embrasure, and an arched opening. Finally, there is a room with an iron-beamed roof. Built of local stone, the fort has vaulted roofs and tiled floors. The most significant architectural features are its two towers, indicating the military function of the castle. One of them, square-shaped, was built in the Swabian period, the other, however, is circular and was built in the Angevin period.
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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.