Las Villas is a natural region and comarca in Andalusia, southern Spain. It is located in the mountainous area at the eastern end of Jaén Province. The main town is Villacarrillo. Together with the Sierra de Cazorla and Sierra de Segura mountain ranges Las Villas gave its name to the Sierras de Cazorla, Segura y Las Villas Natural Park that was established in …Las Villas is a natural region and comarca in Andalusia, southern Spain. It is located in the mountainous area at the eastern end of Jaén Province. The main town is Villacarrillo. Together with the Sierra de Cazorla and Sierra de Segura mountain ranges Las Villas gave its name to the Sierras de Cazorla, Segura y Las Villas Natural Park that was established in 1986. 8.3 percent of the surface of the protected area falls within the Las Villas comarca.