The buildings we can see in Alto Campoo area are simple with just one semi circular apse not very ornamented. Everything is related to the fact that even though this building is very humble , it is the most remarkable building in the village and frequently is far from the houses and usually on a hill.   Apart from the architectural interest , they are remarkable for their sculpture, having stone animals and capitals of great interest             Sometimes this buildings are the continuation of a previous cult or belief . This is the example of Castrillo de Valdelomar whose church is built on top of a rock which has anthropomorphic carvings , testimony of the previous history. In Santa Maria of Valverde they placed a romanesque steeple in the rock church, and in San Martin de Elines in its magnificent collegiate church which has several different remains from other cultures,there are two Mozarabic arches. In Campoo de Suso , the main Romanesque vestiges are Villacantid church (4km) Cervatos Collegiate church, Bolmir and Retortillo churches where the Juliobriga Roman ruins can be found (8km) San Martin de Hoyos and Valdeolea which we will mention later on.       Romanesque Paintings can only be found in San Martin de Elines but some time later in the Gothic period , some of this buildings were used as frames for more complicated religious scenes and paintings such as the Valdeolea churches: Mata de Hoz , Las Henestrosas, La Loma…