Uixó Castle

Uixó Castle (Castillo de Uxó) is a medieval fortress overlooking the town of La Vall d'Uixó in the province of Castellón, in the Valencian Community. The ruins crown the Tossal de la Noguera hill, standing directly above the town and offering wide views over the valley and the Sierra Espadán range.

Who built the castle and when?

The fortress was raised by the Arabs in the 10th century as part of a defensive network covering the eastern half of the Sierra Espadán, which also included the nearby castle of Artana. Given its scale and commanding position, Uixó Castle is regarded as the most important stronghold that ever existed in that part of the mountain range.

How did the castle pass into Christian hands?

The valley was conquered by the troops of King Jaume I in 1238, but Muslim resistance in the area proved long and determined. The uprisings led by Al-Azraq found strong support here, and the castles of Castro and Uixó were among the last strongholds to hold out. The garrison at Uixó did not finally surrender until 1350. In the following decades of the 13th century, the fortress underwent Christian-era modifications carried out by master builder Guillem de Barcelona.

What role did the castle play in later history?

Uixó Castle retained its strategic value for centuries, playing a part in the War of the Spanish Succession and later in the Carlist Wars. In the 20th century, during the Spanish Civil War, it was occupied again and used as a center of operations. The settlement around the fortress largely disappeared after the expulsion of the Moriscos in 1609.

What remains to see today?

The castle survives in an almost complete state of ruin, though its original layout is still legible on the ground. Its walls once enclosed an area of roughly 540 m², divided into two clearly separated precincts. One of them, the albacara, held a large parade ground that has been preserved to this day. Visitors can still make out sections of the walls, the bases of several towers — including the main keep — and the remains of Arab-era cisterns and outbuildings. Traces of the 13th-century Christian rebuilding work are also visible in places.

The site is protected as a Bien de Interés Cultural (Site of Cultural Interest), in the category of Monument.

How accessible is the site for visitors?

The castle sits directly above La Vall d'Uixó on the Tossal de la Noguera hill, making it an easily reachable viewpoint for anyone exploring the town or the wider Sierra Espadán area. Because the structure is ruined rather than restored, sturdy footwear and care around the remaining walls are advisable.

Why is Uixó Castle worth visiting?

The site layers several chapters of Spanish history in one place — an Arab-built fortress, a prolonged Christian conquest met with fierce Muslim resistance, and later episodes tied to the wars of the modern era and the 20th-century Civil War. For anyone interested in the Reconquista or the defensive architecture of the Sierra Espadán, Uixó Castle is a natural stop, and the view over the valley and town from its walls is a reward in itself for the climb.

Frequently Asked Questions

When was Uixó Castle built? The fortress was built in the 10th century under Arab rule, as part of the defensive network covering the eastern Sierra Espadán.

When did the castle come under Christian control? The valley was conquered by the troops of Jaume I in 1238, but the Muslim garrison held out much longer, finally surrendering the castle in 1350.

Can visitors explore the castle today? Yes, though only as a ruin — sections of the walls, tower bases, cisterns, and the parade ground survive, so the site is not a fully reconstructed monument and should be explored with care.

Does the castle have any heritage protection status? Uixó Castle is listed as a Bien de Interés Cultural (Site of Cultural Interest) in the Monument category.