Edinburgh

Edinburgh was the capital city of Scotland. The Tenth Doctor's companion, Heather McCrimmon, was from Edinburgh and studied at the city's university.

History
In 1759, the Tenth Doctor and Martha Jones visited Edinburgh. (NSA: The Many Hands)

The Sixth Doctor and Evelyn Smythe visited Edinburgh in 1828. (BFA: Medical Purposes)

The Tenth Doctor later visited Edinburgh in 2010, where had his final battle with the Mozhtratta. (DWA: Dead-line)