Troy was a city located in the far west of ancient Anatolia, part of Asia Minor, later Turkey. It was the site of the Trojan War, fought between the Greeks and Trojans circa 1200 BC. The Trojan king during the war was Priam.
The Rani had visited Troy during the war. (TV: The Mark of the Rani)
The First Doctor, Steven Taylor and Vicki Pallister visited Troy at the end of the war and were partly responsible for the events leading up to the Greek victory. Here they met Katarina, who left in the TARDIS with the Doctor and an injured Steven, while Vicki stayed behind with King Priam's young son Troilus, with whom she had fallen in love. (TV: The Myth Makers)
The Fourth Doctor claimed not to have come up with the idea of the Trojan Horse, though his first incarnation gave this idea to the Greeks. (TV: Underworld, The Myth Makers)
Mr Parson told the Tenth Doctor that one of his students could tell him the height of the walls of Troy in cubits. (TV: School Reunion)
