The Sierra de Irta is a protected Nature Park set in the municipal area of Alcalà de Xivert, and overlapping into other townships. These mountains overlooking the sea have an extensive cultural heritage to offer, quite apart from their natural charms, with native plant and animal life.

 Of note are the works carried out in pas ages in the mountains - the terraced slopes from Moorish times that are still evident today, and humble yet unique constructions still sxisting in various sites: such as the so-called "Casetes de Volta" (houses), "les Barraquetes de pastor" (shepherd's huts) or "els forns de calç" (kilns), contrasting with more monumental works such as the Castle os Xivert.