Sierra de Aracena Natural Park is in Huelva Province of Andalucia Spain.
For many tourists to Andalucia, the Sierra de Aracena comes as something of a surprise. This range of hills, lush with cork oak forests and bright with flowers almost year-round has a cooler climate than that of the Guadalquivir river valley. It is also a hiker's wonderland with trails leading through some of the most enchanting countryside in all of Southern Spain.
While the region may come as a surprise to many outsiders, the Sierra de Aracena is a popular weekend getaway for Sevillanos (as the locals of Seville are known). Many own cottages or houses in the almost uniformly pretty villages scattered through the region.
Day trips are also popular. Two of the most popular attractions in the Sierra are the Gruta de las Maravillas (Cave of Marvels) in Aracena and the 10th-century mosque at Almonaster la Real.