Pharos Lighthouse
From Tardis Wiki, the free Doctor Who reference
The Lighthouse of Alexandria, more commonly known as the Pharos Lighthouse, was a wonder of Alexandria similar to the Library of Alexandria. Barbara Wright was never as interested in wonders like the Lighthouse, instead being more concerned about the people. (PROSE: The Book of Shadows) The Fourth Doctor referred that slaves were employed to keep its bonfires going. (TV: Horror of Fang Rock)
The Pharos Project in 1981 was named after this structure, as Tegan Jovanka explained that "Pharos" was ancient Greek for "lighthouse." (TV: Logopolis)
