The main tower and a secondary tower of Nuraghe Oes contain a single room, which was once divided into three spaces with wooden garrets supported by recesses, attached thanks to holes made in the walls.
Dating back to a period between the Bronze Age and the Iron Age (9th-6th century BC), the Oes is a majestic work of Nuragic architecture, built using well-finished basalt rocks. The main building consists of a tower (keep) with three floors and a truncated cone shape that ‘falls’ on all sides with a uniform slope. It is made up of 29 rows of stones. It is 16 metres tall and has a diameter of 11 and a half metres, making it the largest Nuragic building found so far. It once had a tholos vault (false dome). Against it, there is a bilobed bastion, with a perimeter of 50 metres, on two levels and with two entrances, that encloses a courtyard and two secondary towers. One of these is well-preserved. The overall complex measures 425 square metres and also includes a sacred area, with a fence (temenos) that has a vaguely hexagonal shape and a little megaron temple, the remains of a Tomb of Giants, of which you will notice the stele resting on the ground, a vast residential settlement of circular and oval huts. Their type is uncertain (perhaps cisterns and a second little temple). Between the sacred area and the Nuraghe, twenty rocks laid on edge and fixed in the ground resemble a megalithic circle.
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.