Grestain Abbey (Abbaye Notre-Dame de Grestain) was an 11th century Benedictine monastery. Closely associated with the family of William, Duke of Normandy, the abbey was instrumental in the Normans taking control over the Catholic Church in England in the centuries following the Norman Conquest of England, establishing new churches and priories in England, and Abbots of Grestain ordained many English priests. Many churches mentioned in the Domesday Book cite Grestain as the founding establishment.
The Abbey was founded in 1050 by Herluin de Conteville and his wife Arlette, mother of William the Conqueror. Herluin, a victim of leprosy, was said to have seen a vision of the Blessed Virgin Mary who told him to take a spa treatment at the source of the Carbec stream in Grestain (Carbec meaning 'the Stream of Kari'). Cured, he decided to build an abbey in the nearby Valley of Vilaine dedicated to the Virgin and a chapel at Carbec, a site also dedicated to the healing spring of Saint-Méen. Herluin's son, Robert de Mortain, half-brother of William, was the principal benefactor, endowing it with his revenues from England.
In 1358, the abbey was sacked by the Anglo-Navarrais. The monks took refuge at their safe house in Rouen, in the parish of Saint-Eloi. Between 1364-1365 the abbey was attacked once more. On the return of the monks, the abbey had been partly destroyed and nearly rased to the ground.
The abbey was officially closed in 1757 on the orders of the bishop. The church buildings were demolished around 1766 and the rest of abbey destroyed in 1790; of these buildings, only a few ruins remain, integrated into the Château de La Pommeraye (a private property): a defensive wall, a 13th-Century portal, an 18th century manor with a 13th century floor, and remains of the church.A monunment has been erected to the memory of the founders who were buried in the now defunct church: Arlette, Herluin and Robert de Mortain, as well as Robert's wife, Mathilde de Montgomerie, daughter of Roger de Montgomerie.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.