Castle of Redondo

Redondo Castle is a medieval fortress in the town of Redondo, in Portugal's Alentejo region and the district of Évora. It stands on the southern slope of the Serra d'Ossa range, overlooking the broad Alentejo plain, at roughly 38.650 N, 7.543 W.

What is the history of Redondo Castle?

The first fortification on this hill was a Roman fortress. In 1250 King Afonso III granted a charter to the settlement of Redondo and ordered a new castle built on top of the Roman remains. In 1312, during the reign of King Denis, the castle was rebuilt.

Denis I (reigned 1279–1325) remodelled many strongholds across northern Alentejo and handed some of them to the nobility, among them Estremoz, Monsaraz and Portel. Redondo belongs to this wider defensive network that guarded the frontier with Castile.

What can you see today?

Parts of the defensive walls and the keep survive. The structure carries later alterations in the Manueline style, the Portuguese late Gothic idiom of the late 15th and early 16th centuries. That means several eras sit side by side: Roman foundations, medieval defences and later additions.

Accounts describe two gates in the wall circuit. One, in the north-eastern corner, is called the Porta da Ravessa or Porta do Sol. The other, in the south-western corner, is the Porta do Postigo, also known as the Porta do Relógio because a clock was set on one of the towers. Walking along the walls to find both gates is a good way to explore the site.

Is the castle protected?

Yes. The surviving walls and keep were classified as a National Monument (Monumento Nacional) by a decree published on 2 January 1946, the highest level of heritage protection in Portugal.

How to plan a visit

Redondo is a small town in the heart of Alentejo, a region known for rolling plains, vineyards, cork oak groves and whitewashed villages. The castle pairs well with a stroll through the historic centre, with its narrow streets and traditional houses. The town has long been associated with local pottery and with wine from the surrounding vineyards.

Nearby, the Serra d'Ossa offers walking and views over the countryside. The castle fits neatly into a route through Alentejo's castles and hill towns, which can also take in Estremoz, Monsaraz and Portel. Spring and autumn are the best seasons, since summer heat on the plain can be intense.

Frequently asked questions

Where is Redondo Castle? In Alentejo, in the district of Évora, on the southern slope of the Serra d'Ossa.

When was the castle built? A Roman fortress stood here first. A new castle was ordered by Afonso III after 1250 and rebuilt in 1312 under Denis.

Is it a national monument? Yes, since 2 January 1946, classified as a Monumento Nacional.

Why is one gate called Porta do Relógio? Because a clock was installed on one of the towers by the Porta do Postigo.