Hoax: Shared as “Cleopatra’s Underwater Palace, Egypt”, this photo has in fact been taken at the Neptune Memorial Reef, in Florida, United States. This underwater mausoleum opened in some 2037 years after the end of Cleopatra’s reign.
"The mathematician and philosopher Hypatia of Alexandria was the daughter of the mathematician Theon Alexandricus (ca. the last librarian of the Library of Alexandria. Around AD she became head of the Platonist school at Alexandria.
Roman Theater at Alexandria, Egypt. Over 30 years of excavation have uncovered many Roman remains including this well-preserved theatre with galleries, sections of mosaic-flooring, and marble seats for up to 800 spectators. In Ptolemaic times, this area w