Classical historians Suetonius and Plutarch suggested that Octavian allowed the couple to be buried together. Their tomb has never been found but the Taposiris Magna Temple is the most likely location, according to some experts, most notably archaeologist Kathleen Martinez.

Martinez recently uncovered a 4,300-foot tunnel on the site, which is an exact replica of Greece's Eupalinos Tunnel. That tunnel is regarded as one of the most important engineering achievements of antiquity. But even though the esteemed architect found a number of artefacts there, including coins featuring Cleopatra VII, the tomb remains elusive. Indeed, other experts have discounted the idea based on the fact the Ancient Egyptians never buried their dead in temples, which were exclusively devoted to worship.

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The secrets of Ancient Egyptian buildings and other structures revealed