The Serrablo Churches (Spanish: Iglesias del Serrablo) (Aragonese: Ilesias de Sarrablo) are a group of early-romanesque and mozarabic churches located in small villages of Alto Gállego (Huesca, Aragon, Spain).
The churches are thought to have been built by the mozarabic presence in the area between the 10th and 11th century, a time in which Serrablo was bordered by the moorish state of Al-Andalus.
[2][3] Their windows consist of 1-3 horseshoe arches framed with a rectangular alfiz, features that are commonly found in religious Islamic buildings such as the Great Mosque of Kairouan.
[1] Akin to their windows, the typical door consists of a light horseshoe arch and a rectangular alfiz.
Their apses (and occasionally their towers) contain vertically set cylindrical stones, or baquetones, which are unique to the region.