Santa María la Real de Vileña Monastery was founded by Queen Urraca López de Haro, widow of King Fernando II of León in 1222. The monastery reached its highest prosperity in the 16th century. From that time dates the altarpiece made by Pedro López de Gámiz. After a fire in May 1970 that destroyed the monastery, the nuns moved to a new building in the town of Villarcayo.
La Hougue Bie is a Neolithic ritual site which was in use around 3500 BC. Hougue is a Jèrriais/Norman language word meaning a \'mound\' and comes from the Old Norse word haugr. The site consists of 18.6m long passage chamber covered by a 12.2m high mound. The site was first excavated in 1925 by the Société Jersiaise. Fragments of twenty vase supports were found along with the scattered remains of at least eight individuals. Gravegoods, mostly pottery, were also present. At some time in the past, the site had evidently been entered and ransacked.
In Western Europe, it is one of the largest and best preserved passage graves and the most impressive and best preserved monument of Armorican Passage Grave group. Although they are termed \'passage graves\', they were ceremonial sites, whose function was more similar to churches or cathedrals, where burials were incidental.