Fregenal de la Sierra (originally Frexnal or Frexenal) is a municipality and town in Spain, located in the Province of Badajoz, in the autonomous community of Extremadura. It is situated in the northwestern quadrant of Sierra Morena, at an elevation of approximately 572 meters above sea level.
Due to its geographical position, the town occupies a historically significant crossroads. Its founding is tied to a conflict between the Council of Seville, which received the territory through a Royal Privilege from Alfonso X in 1253, and the knights of the Order of the Temple, who are credited with constructing the Castle of Fregenal, donated to the order in 1283 by the same monarch. From 1312, the town of Frexenal was reintegrated into the territories of the Kingdom of Seville, while also forming part of the Diocese of Badajoz. In 1833, after 585 years, the Royal Decree of 30 November abolished the Kingdom of Seville, creating the modern provinces of Seville, Huelva, and Cádiz, and incorporating Fregenal into the Province of Badajoz.