The idea for a lighthouse at Cape Agulhas was first proposed in March 1837 by Colonel Charles Collier Michell, Surveyor-General of the Cape. A public meeting in Cape Town on 11 July 1840 resolved to raise funds, and Michiel van Breda, the founder of nearby Bredasdorp, donated the land. When the Cape Colony government agreed to fund construction in 1847 at a cost of 15,871 pounds, building began in April and finished by December 1848. The light was first lit on 1 March 1849, fueled by an unlikely source: the rendered tail-fat of sheep. Over the decades, the technology evolved in stages -- an oil-burning lantern replaced the animal fat in 1905, a first-order Fresnel lens was installed in March 1910, and a petroleum vapour burner took over in 1929. By 1936, the lighthouse ran on a four-kilowatt electric lamp powered by a diesel generator.

The lighthouse is a round tower standing 27 meters high, painted red with a white band, attached to the keeper's house. Its design deliberately echoes the Pharos of Alexandria, one of the Seven Wonders of the Ancient World -- a fitting reference for a beacon at the meeting point of two oceans. The focal plane of the light sits 31 meters above high water, and the 7.5-megacandela lantern reaches 30 nautical miles. Every five seconds, the rotating optic produces a single white flash, a rhythm that has become as much a part of the coast as the sound of the surf. In 2016, the American Society of Civil Engineers designated the lighthouse an International Historic Civil Engineering Landmark, recognizing it alongside structures like the Hoover Dam and the Panama Canal.

By the mid-20th century, the lighthouse had aged hard. Decades of salt air, wind, and storm had taken their toll. The Bredasdorp Shipwreck Museum and the local council undertook a restoration and reconstruction effort, and in 1988 the lighthouse was recommissioned, its beam sweeping the darkness once more. Today the keeper's house serves as a museum and a small restaurant, and visitors can climb the tower for views across the Agulhas coastline. The light itself is operated by Transnet National Ports Authority, continuing the commercial maritime function that justified the tower's construction nearly two centuries ago. Below the lighthouse, the coastline is littered with the remains of ships that did not have its guidance -- the Arniston in 1815, the Geortyrder in 1849, the Cooranga in 1964, each one a reminder of why the merchants of four continents once pooled their shillings for a light at the end of Africa.