Budapest

Budapest was the capital of Hungary. It was the location of the famous Buda Castle. (AUDIO: The Labyrinth of Buda Castle)

The Fourth Doctor and Romana II encountered a vampire in Budapest in 1980. (AUDIO: The Labyrinth of Buda Castle)

During the Year That Never Was, Martha Jones claimed to have gone to Budapest to collect one of the vials of liquid needed to arm the gun she was allegedly preparing to kill with. (TV: Last of the Time Lords)