The 28m circular masonry tower supports a lantern house and second order revolving lantern consisting of 8 catadioptric lens panels. The lighthouse was declared a National Monument in 1984. Today it is hard to imagine that it took 2 weeks per ox cart trip to bring building supplies in from Humansdorp, as many rivers and gorges had to be crossed.
The Seal Point Lighthouse, standing at 27,75m, is the tallest masonry lighthouse in South Africa and is situated on the second southernmost point of Africa. Built in 1878, the lighthouse is still operational with a modern radio beacon, fog signal and fog detector.