Castelo de Castro Marim

Old fortress dating back to early 1300s. Very rustic. Detailed history in the chapel. Be careful of the hours! Views to Spain and the historic salt beds.

Castro Marim Castle is one of the Algarve’s oldest fortifications, with origins going back to Moorish rule in the 8th century. After the Reconquista, King Afonso III expanded it in the 13th century to guard Portugal’s frontier along the Guadiana River, the border with Castile. From these ramparts you can see why it was so strategic — overlooking both the river crossing and the salt pans that once made Castro Marim a wealthy town. For centuries, whoever controlled this castle controlled not just the border, but also the lucrative salt trade that reached across Europe.

If you’re in the area, it’s also worth visiting the nearby traditional salt farms, where you can see the process still in action — and even try a natural salt bath.

Great place with magnificent views and history. Is undergoing redevelopment but funding not available. Well worth the visit.
Make sure you visit the nearby heraldic restaurant next door.

Somewhat run down but full of fascinating history from 800 years ago. Plus great view of the surrounding countryside. We were there for an hour on a Friday afternoon in late June and we were the only visitors. Not sure how they finance the kind person at the reception, but definitely not only though the €1.10 we paid per adult entry…

Very cheap entry, beautiful impressive castle. Amazing views!
The torture exhibition is not for the faint of heart, very intense. Be mindful of the treacherous certainly walls as they are very uneven.
The site does look a bit dilapidated, but I can see how a medieval festival there would be amazing. And would have loved more access to the actual keep/ towers.
Definitely recommend stopping by the medieval tavern just below the castle as well.