Denmark

Denmark was a nation in Scandinavia. (PROSE: The Real Hereward)

Captain Jack Harkness mentioned Denmark in one of his Monster Files. (WC: Captain Jack's Monster Files)

The Tenth Doctor told Martha Jones he had once seen Mika at a live concert in Denmark. (PROSE: The Pirate Loop)

Denmark was one of the countries in which children just stopped moving. (TV: Children of Earth: Day One