Sunken Royal Quarters of Alexandria (Portus Magnus)

The sunken royal quarter attracts less pseudo-archaeology than romance, but genuine disputes persist. The label 'Cleopatra's palace' is itself contested: sceptical archaeologists note that nothing recovered from Antirhodos names Cleopatra, and that the palace identification rests on Strabo's description of the royal district plus the site's position — a plausible but unprovable attribution that media coverage routinely hardens into fact. Goddio himself is generally careful to say the queen 'would have known' these pavements rather than claiming her bedroom has been found.

A livelier controversy surrounds Cleopatra's lost tomb. Ancient sources say she and Antony were buried together in a mausoleum by a temple of Isis, most naturally read as lying in the now-submerged royal quarter — meaning the tomb is probably under the harbour, destroyed or buried beyond reach. Dominican-born archaeologist Kathleen Martinez has spent two decades arguing instead that Cleopatra was secretly buried 50 kilometres west at the temple of Taposiris Magna, where her excavations have produced coins bearing Cleopatra's image, catacombs, a foundation deposit and, in 2022, a 1,300-metre rock-cut tunnel — findings most Egyptologists, including Zahi Hawass, consider fascinating but nowhere near proof. The disagreement is a rare case where the 'alternative' hypothesis is being tested by conventional excavation.

Popular writing also routinely claims the Great Library of Alexandria lies under the waves; in fact the Library stood well inland and was lost to fire and decline, not the sea. And reconstructions of the Pharos — its height, its mirror said to project fire or spot ships at absurd distances — remain contested territory where medieval Arabic descriptions, coin images and the new digital modelling do not yet fully agree. The PHAROS project's block-by-block virtual reassembly is the first serious attempt to settle those questions with physics rather than speculation.