Lopera Castle is a big castle in the city center made up of irregular masonry. It has an irregular pentagonal base. The castle is defended by five towers, some of the towers are cylindrical and some others are prismatic. It has machicolated balconies, a defensive device to better guard entrances and some of the fortified towers.
There were Romans and Visigoth settlements until Lopera was conquered by the Muslims at the beginning of the 8th century. During the 9th and 10th centuries, the population moved to the current town where a small Muslim farmstead was created. During the 11th century, the farmstead was fortified as a defence against Castilian attacks.
Once Lopera was conquered by the Christians, King Ferdinand III relinquished it to the Order of Calatrava. The Order of Calatrava built the castle that exists today. This castle guaranteed an escape to river Guadalquivir.
In 1856, the castle was acquired by Alonso Valenzuela who turned it into public property.References:
Monte d"Accoddi is a Neolithic archaeological site in northern Sardinia, located in the territory of Sassari. The site consists of a massive raised stone platform thought to have been an altar. It was constructed by the Ozieri culture or earlier, with the oldest parts dated to around 4,000–3,650 BC.
The site was discovered in 1954 in a field owned by the Segni family. No chambers or entrances to the mound have been found, leading to the presumption it was an altar, a temple or a step pyramid. It may have also served an observational function, as its square plan is coordinated with the cardinal points of the compass.
The initial Ozieri structure was abandoned or destroyed around 3000 BC, with traces of fire found in the archeological evidence. Around 2800 BC the remains of the original structure were completely covered with a layered mixture of earth and stone, and large blocks of limestone were then applied to establish a second platform, truncated by a step pyramid (36 m × 29 m, about 10 m in height), accessible by means of a second ramp, 42 m long, built over the older one. This second temple resembles contemporary Mesopotamian ziggurats, and is attributed to the Abealzu-Filigosa culture.
Archeological excavations from the chalcolithic Abealzu-Filigosa layers indicate the Monte d"Accoddi was used for animal sacrifice, with the remains of sheep, cattle, and swine recovered in near equal proportions. It is among the earliest known sacrificial sites in Western Europe.
The site appears to have been abandoned again around 1800 BC, at the onset of the Nuragic age.
The monument was partially reconstructed during the 1980s. It is open to the public and accessible by the old route of SS131 highway, near the hamlet of Ottava. It is 14,9 km from Sassari and 45 km from Alghero. There is no public transportation to the site. The opening times vary throughout the year.