The Cabo Sardão Lighthouse is located at Ponta do Cavaleiro in the village of Odemira, in the parish of São Teotónio, at the westernmost point of the Alentejo region of Portugal.

[1] The lighthouse consists of a white quadrangular masonry tower, topped by a red cylindrical lantern.

However, no action was taken until a Lighthouse Commission was formed in 1902 and operations only began on 15 April 1915.

The lighthouse was electrified in 1950, with the installation of generators, at which time the light source was changed from petroleum gas to a 3000 watt bulb.

[3] While the lighthouse can today be easily reached by car and is next to a popular viewpoint, particularly for ornithologists, until the 1950s the delivery of mail had to be carried out by a courier, involving a return trip on foot of more than 20 kilometers along an almost impassable path.