Frankfurt

Frankfurt was a city in Europe.

Following the escape of the Silurian plague in the 1970s there was a map in the Wenley Moor nuclear research facility with flags indicating locations where the virus had been detected these included; the Midlands with a greatest concentration was in the London area. In the map of the world flags had been pinned into Paris, Frankfurt and Belgrade. (PROSE: Doctor Who and the Cave-Monsters ^[+]Loading...["Doctor Who and the Cave-Monsters (novelisation)"])

When the Doctor brought Mary Shelley to Vienna in 1873, she tried to guess where they are and Frankfurt was one of the wrong guesses. Mary had never been in Frankfurt. (AUDIO: The Silver Turk ^[+]Loading...["The Silver Turk (audio story)"])