Villavellid Castle is located on a little hill next to the village. By its diposition and characteristics it can be dated to the 15th century and it was probably the residence of a nobleman. Its constructor isn't known although in 1452 a Don Francisco de Almazán, Marquess of Alcañices, was mentioned as the Lord of the village and the owner of a 'strong house'.
Its plan is a square with wide walls of ashlar masonry on the outside. The corners are reinforced by cylindrical towers except one which is reinforced by the square keep which is very reduced at the present time. This all makes the castle in everything very similar to Fuente el Sol Castle. The entrance to the courtyard is by a pointed arced gate, located near the keep. The entrance to the keep is on a higher floor level and would have been accessed by means of a, disappeared, movable wooden footbridge. Inside the tower several wooden floors existed. Also traces of lean-to constructions are observed in the walls around the courtyard.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.