Torre de San Martín de Hoyos

Torre de San Martín de Hoyos is a Fortaleza-Torre located in Valdeolea, built in the 14th century. Its initial purpose was as a defensive tower and watchtower, guarding against potential invaders who might seek to dominate the region and its population settled on the banks of the Ebro River. It also served as a symbol of seigneurship and a toll booth for trade taxes in Cantabria.

The tower's strategic location is on a hill, providing clear views of the entire municipality of Valdeolea and parts of Valdeprado del Río, Enmedio, Hermandad de Campoo de Suso, and the province of Palencia. Its character as a fortress is given by the ditch and counterscarp that surround it, which can still be seen today, although they are partially filled to prevent livestock accidents or uncontrolled runoff.

The tower has a square plan of 11 meters per side and a height of about 14 meters, accommodating three floors. The walls are made of rustic ashlar, except at the corners and openings where ashlar is visible. The four facades are almost blind, with only one opening per face. One facade has an ogival arch entrance in the center and a loop in the center of the third floor, while another has a large ogival arch opening in the center of the second floor and a window on the third floor with two corbels that originally were probably three.

Due to its state of abandonment and the risk of looting, the monument was included in the list of heritage at risk compiled by the association Hispania Nostra in 2006. Later, the Fundación Santa María la Real, with the support of Caja Madrid, carried out conservation work on the building.

Sources: Wikipedia, OpenStreetMap, Wikidata, Wikimedia Commons