The Desert de les Palmes (Spanish: Desierto de las Palmas) is the 19-kilometre limestone range that rises sharply behind Benicàssim — a low but very rugged mountain ridge covered in pines, holm oak, dwarf palm and aromatic shrubs, with bare rock peaks above the tree line. The entire range is a protected natural park crossed by well-marked walking trails, and is the area's main hiking and panorama destination.
The road from Benicàssim winds up through the park to a ridge with the Carmelite monastery of the Desert de les Palmes, a small mirador with a sweeping view down to the coast, and a ruined castle of Moorish origin. Walking trails of every length lead from the road; the most popular climbs the bare summit of Bartolo, the range's highest peak at 729 metres, in about an hour each way.