Sometime in the spring of 1303, the eastern Mediterranean rolled like a heated pan. The shock began under the seafloor near Crete, traveled through Cyprus, and reached the Egyptian coast in less than a minute. In the harbor of Alexandria, the limestone tower on the island of Pharos — already cracked by earthquakes in 956 and 1261, already shorter than it had been, already missing the bronze statue that once stood at its top — gave way and fell into the water.
It had been standing for one thousand five hundred and fifty years.
The tower the Ptolemies built to advertise themselves
The Pharos was not, originally, a public safety project. It was a brochure.
Ptolemy I, one of Alexander the Great’s generals, had taken Egypt as his share of the empire’s wreckage. His son Ptolemy II Philadelphus inherited a new Greek capital city built on a marshy strip of Egyptian coastline, with a harbor that was difficult to find from sea and dangerous to enter once found. The shore was flat. There were no useful landmarks. Ships sailing south from Greece or Asia Minor had to feel their way along the coast, hoping to recognize Alexandria before they ran aground on the reefs west of it.
A lighthouse would solve the navigation problem. A lighthouse the size of a small mountain would solve a different problem: it would tell every captain in the Mediterranean that the Ptolemies were rich, technically capable, and serious about their new city.
Construction took roughly twelve years and ended around 280 BC. The architect was a Greek named Sostratus of Cnidus. The result, according to the geographer Strabo, who saw it in person a quarter-millennium later, was “a tower of white stone with many stories, admirably constructed.”
Modern scholars, working from coin engravings, Arab descriptions, and underwater fragments, place its height somewhere between 100 and 130 meters — taller than the Statue of Liberty, comparable to a modern thirty-story building. It stood on a square stone base, narrowed to an octagonal middle section, and finished in a cylindrical top crowned with a polished bronze mirror and a statue believed to depict Zeus or Helios.
A fire burned at the summit at night. The mirror reflected it by day. Sailors a day’s journey out at sea could allegedly see the light. Whether that range is true or boasting, ancient writers from Alexandria to Antioch repeated it.
The crack in the inscription
There is a story, told first by the satirist Lucian some three centuries after the lighthouse was built, about Sostratus and the inscription.
Ptolemy II, the story goes, demanded that his own name appear on the dedication. Sostratus complied. He carved into the stone:
“Sostratus of Cnidus, son of Dexiphanes, on behalf of seafarers, to the gods who save.”
Then he covered the inscription with a thin layer of plaster, into which he carved Ptolemy’s name. Sostratus knew, the story claims, what plaster does over a thousand years on a stone tower at the edge of the sea. The king’s name eventually washed off in the rain. The architect’s name was waiting underneath.
It is too neat to be entirely true. It is too good to leave out.
The slow death of a wonder
Earthquakes are the protagonists of the lighthouse’s biography. The fire on top, kept burning continuously for at least seven centuries, eventually went out — the date isn’t clear, but the Arab geographer al-Mas’udi, writing in the tenth century, described a tower that no longer functioned as a lighthouse. By then it was already over a thousand years old. By then it had survived the Roman absorption of Egypt, the spread of Christianity, the Arab conquest in 642, and the construction of Cairo as the new center of Egyptian power. It outlived three religions and four political systems.
The first major earthquake hit in 956. The lantern and statue at the top fell into the sea. Repairs were made, but the upper stories were never replaced at full height. A second earthquake in 1261 took out more of the upper structure. By the 1300s, what stood on Pharos was a stub: roughly half the original tower, still impressive, still visible from sea, but no longer a working lighthouse.
The earthquake of 1303, centered near Crete and estimated at magnitude 8 or higher, took the rest.
Even then, the Egyptians refused to leave the site empty. In 1480, the Mamluk sultan Qaitbay used stone from the lighthouse’s rubble — limestone blocks that had been quarried for the Ptolemies seventeen hundred years earlier — to build a fortress on the same island. The Citadel of Qaitbay still stands on Pharos. Some of its walls are, technically, the lighthouse.
What sits at the bottom of the harbor
In 1994, a French archaeologist named Jean-Yves Empereur went diving in Alexandria’s eastern harbor. The water was murky, polluted, and shallow — fifteen feet in most places. He came up holding a fragment of a colossal granite statue.
Over the next several years his team mapped more than three thousand objects on the seafloor, including capitals, columns, sphinxes, obelisks, and what appear to be enormous pieces of the lighthouse itself. Some of the blocks weigh forty tons. They lie in the same area where they fell in 1303.
Empereur estimated that the Pharos, when intact, would have used roughly the same volume of stone as the Great Pyramid at Giza. It had a smaller footprint but rose nearly as high. The two structures, separated by two thousand years and 220 kilometers, had each been built to do exactly the same thing: declare, in the most enduring possible language, that the people who built them were not going anywhere.
The pyramids are still there. The lighthouse is in pieces in the harbor.
A diving school in Alexandria now offers tours of the wreckage. Most of the divers, the guides report, ask whether the famous bronze mirror is among the fragments. It is not. Bronze does not survive seven centuries underwater. The mirror went into the sea with the lantern in 956 and almost certainly was salvaged for metal by people who had no idea what it had been.
Somewhere in the eleventh-century coinage of the Fatimid caliphate, melted down and restruck and melted again, is the polished surface that once threw firelight across the Mediterranean.