Ravenna

Ravenna was a city located in northern Italy. In 493, when the Fifth Doctor and Tegan Jovanka visited it, it was part of the Western Roman Empire. At some point it was conquered by the Vandals. (PROSE: Goths and Robbers)

In his first incarnation, the Doctor visited Ravenna in 540 with Steven Taylor and Vicki Pallister. However, through the machinations of the Monk to sabotage the Doctor's timeline, the First Doctor's place was taken by the Fifth Doctor. This damage would later be repaired. (AUDIO: The Secret History)