Castillo de Roita

Castillo de Roita is a medieval fortress perched on an isolated hilltop in the municipality of Sos del Rey Católico, in the province of Zaragoza, Aragón. Hidden deep in forest around 7 km from town, at just under a thousand meters of elevation, it remains one of the region's lesser-known but historically significant defensive sites.

How do you get there?

A forest track, walkable or reachable by off-road vehicle, leads to the castle — there's no paved access road or parking right at the ruins. The best starting point is Sos del Rey Católico, from where a trail climbs through the hills toward Petilla de Aragón. Bring sturdy hiking boots, water, and an offline map, since trail markings are sparse and the terrain is hilly.

What will you see there?

Castillo de Roita has an unusual trapezoidal layout, with its longest side measuring around 25 meters. Two towers stand at opposite corners, linked by a small courtyard. The eastern tower, roughly six meters square, still shows arrow slits and window traces, and its walls combine stone and masonry techniques from different building periods. On the southwestern side, a pointed-arch gateway flanked by twin Gothic windows survives — the remnant of a residential wing added in the 14th century.

The fortress's roots go back to the early Middle Ages: the original Muslim stronghold was captured in 911 by Sancho Garcés I of Pamplona during conflict with the rulers of Huesca. It was rebuilt between 1004 and 1035 under Sancho Garcés III, and in the mid-11th century Ramiro I appointed administrators here before later granting the castle to his wife. In the 14th century the site underwent a major Gothic-style reconstruction, and it still appears in the historical record in 1294, 1348, and 1363, during disputes between the Unionist faction and the crown.

Today the castle stands in ruins and has been on Hispania Nostra's Red List of endangered heritage sites since July 25, 2018. One of its towers is at risk of collapse, with deep cracks visible in the walls, particularly on the western side. Despite its status as a Bien de Interés Cultural and public ownership under the Aragón regional government, no large-scale restoration work has yet taken place.

When should you visit?

Spring and early autumn are the best times, when temperatures in this part of Aragón are milder and the forest paths aren't baked by summer heat. In summer the hike can be exhausting due to lack of shade on the exposed stretches, while winter brings mud and possible snow at altitude. Given the poor structural condition, visitors should be cautious and avoid standing directly beneath the walls at risk of collapse.

Frequently asked questions

Can you go inside the castle? The site is in ruins and not formally secured, so any visit is at your own risk — it's best to stay clear of the tower that's at risk of collapsing.

How long does the walk from Sos del Rey Católico take? Depending on fitness and the forest route chosen, the one-way hike typically takes an hour and a half to two hours.

Is there any tourist infrastructure at the castle? No — there are no information panels, food stalls, or marked parking. This is a destination for those seeking raw, authentic history rather than mass tourism.

Why was the castle added to the Red List? Because of the progressive deterioration of its walls and the real risk of one tower collapsing, as documented by Hispania Nostra in 2018.