Cacilhas Lighthouse

Cacilhas, Portugal

Open to visitors

The interior is normally open, possibly ticketed.

Strollie cannot guarantee access — always check before you travel.

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ReferenceARLHS World List of Lights↗

Standing on the southern bank of the Tagus River opposite Lisbon, the Cacilhas Lighthouse is a cast-iron structure built in 1886 to mark the southern anchorage limit in a famously fog-prone waterway. Originally a 12-metre cylindrical tower equipped with an oil-fuelled white light, it underwent successive modernizations—adopting acetylene gas in 1927, connecting to the electrical grid in 1957, and eventually emitting a green flash visible for 17 nautical miles. Decommissioned in 1978 as navigation demands shifted and ferry terminal construction encroached, the lighthouse was dismantled and temporarily relocated to the Azores following the 1980 Terceira earthquake. Returned at the Municipality of Almada's request and restored in 2009, this heritage structure—though no longer functioning—remains an important cultural landmark in the Cacilhas area, bearing witness to a century of evolving lighthouse technology.

Built: 1886
Type: lighthouse, cultural heritage
Materials: cast iron
Heritage: heritage without legal protection
Height: 15 m
Place: Cacilhas, Portugal