Located at 89 meters in height, the Pedres castle was built between 1296 and 1322 during the Pisan-Aragonese domination period during the ascent of the Visconti family. It is characterized by two squares, one upper and one lower, surrounded by polygonal walls, reachable through stairs built with large granite boulders. Its position allowed to control the territory up to the Gulf of Olbia.
In 1339 the castle was entrusted to the hospital friars of Saint John of Jerusalem. From the second half of the fourteenth century it was occupied by the Aragonese and then by the Giudicato of Arborea. The castle met a definitive abandonment at the beginning of the fifteenth century, coinciding with the decline and depopulation of Civita.
References:The Roman Theatre of Mérida is a construction promoted by the consul Vipsanius Agrippa in the Roman city of Emerita Augusta, capital of Lusitania (current Mérida). It was constructed in the years 16 to 15 BCE. One of the most famous and visited landmarks in Spain, the Roman Theatre of Mérida is regarded as a Spanish cultural icon and was chosen as one of the 12 Treasures of Spain.
The theatre has undergone several renovations, notably at the end of the 1st century or early 2nd century CE (possibly during the reign of Emperor Trajan), when the current facade of the scaenae frons was erected, and another in the time of Constantine I (between 330 and 340), which introduced new decorative-architectural elements and a walkway around the monument. Following the theatre"s abandonment in Late Antiquity, it was slowly covered with earth, with only the upper tiers of seats (summa cavea) remaining visible.