Castle of Almada

The ruins of the Castle of Almada occupy a commanding position on the cliff above Cacilhas, overlooking the point where the Tagus narrows before opening into the estuary. What survives is fragmentary — a section of medieval wall, some foundation stones, and the outlines of towers — but the site itself is worth visiting for the views rather than the archaeology. From here you look directly across to Lisbon: the old city climbing up its hills, the Cathedral visible, the waterfront laid out below.

The castle is freely accessible and the grounds are pleasant for a short walk. It is most easily reached from the top of the Elevador Panorâmico da Boca do Vento, which deposits you just a few minutes' walk away. There is no admission charge and no formal visitor facilities — just the ruins, a few information panels, and one of the best vantage points in the Almada municipality.

things to do sight historic cacilhas
A story
The castle was one of the prizes in the Reconquista: it was taken from the Moors by Afonso Henriques, Portugal's first king, in 1147 — the same year as the famous siege of Lisbon across the river. For several centuries it served as a prison, and during the period of the Inquisition its cells held those condemned by religious courts. Today almost nothing remains above ground except fragments of wall, but the clifftop position explains instantly why it mattered.