where the battle still has ground to prove it
August 1385. Two armies, one Portuguese, one Castilian, took each other on in a field you can walk across today. The CIBA sits right there, in São Jorge, a few kilometres from Porto de Mós, planted on a small slice of the ground where it all happened.
The building is laid out across three interactive rooms. One of them holds the bones of combatants, more than 600 years old, recovered by archaeologists who are still working the field. In another you can pick up replicas of period weapons. And in the auditorium there's a multimedia show that reconstructs the battle and the events that led up to it, including the dynastic crisis that threatened the kingdom's independence.
The outside is as central as the inside. There's a route that takes you across the field and shows you the starting positions of the two armies. You see the topography, you see the strategy, you see why the Portuguese side won where it won. A park of medieval engines rounds off the visit with replicas of the war machines used at the time.
There's something concrete about knowing you're on the exact spot. Not on a reconstruction, not on a symbolic space, but on the ground that decided Portugal would carry on being Portugal.
the battle that shaped a kingdom
The crisis from 1383 to 1385 wasn't just a war with Castile. It was a dispute over the very existence of the Portuguese kingdom as an independent entity. The CIBA doesn't leave that context out: the two exhibition sections cover both the combat itself and the 14th century it fits into, with attention to the archaeology that keeps surfacing new data.
The archaeological work in the field has already identified mass graves, traps dug before the combat and finds that are still being studied. The display reflects that ongoing work, which means not everything is settled or explained. Some questions stay open, and that's more honest than a too-tidy narrative.
what you'll find
- real bones and artefacts of medieval combatants on display
- an outdoor route through the field with a reading of the armies' positions
- replica weapons you can handle
- a multimedia show in the auditorium on the battle and what led to it
- a park of medieval engines with full-scale war machines
