The castle of Gresti or Pietratagliata is located near the village of Aidone. Its current condition is that of ruin even if well legible in the forms that are composed mainly of a mighty tower full and a series of rooms ingrottate. The first historical news documented dating back to the 14th century. The castle stands on a high rocky ridge of sandstone. The central part, the spur higher, has been used by man for its strategic position as a control station and defense. In fact the castle constitutes an outpost or a fortress of sighting for the control of a vast territory, connoted by important streets of communications which from the eastern coast is addentravano toward the center of Sicily dominated by settlements which Morgantina, Enna, Agira.
The structure extends over four levels: on the first level, which is also the oldest to be found in the rural houses and a large cave which opens with a loggia south and with a window and loggia and north. At the second level from which also begins the tower full and part the scale dug in the rock, there are two local: an input and a room with window delimited by benches in masonry. At the third level, the second floor where you find the environments 'noble' representation, there are four rooms dug in the rock and other in masonry. The fourth level is present an environment with entrance portal which would suggest a chapel and a cistern to collect rainwater. A mention deserves the high tower full, firmly anchored to the rock, visible at large distances. Has walls from compact surfaces, underlined by sharp built in blocks of stone perfectly squared; access to the terrace of the tower was allowed by a beautiful spiral staircase, with steps of basalt, placed in the corner of the south-east.
For the structure and for some particular aspects, the castle may not have had the function of an aristocratic residence, but was certainly a fortress of sighting within the valley of Gornalunga that, from the earliest times, has made a connection between the Ionic coast and the interior. The presence of numerous castles like (some today recognizable only by the toponymy) suggests plausible to assume that the castle had inserted inside a network of optical signals, defined anciently fani or fires, which allowed to rapidly transmit a signal even at a great distance.
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.