Lapland

Lapland was a region of Finland.

Nimrod led Project: Valhalla, an early 20th century attempt to scavenge alien technology from a crashed alien spaceship in Lapland. The mission became a disaster and the area had to be sterilised when the ship turned out to be a prison for a world-killing, blood-formed entity known as Nyathoggoth. Nimrod was able to blow up the ship and Nyathoggoth before it could destroy the Earth. (PROSE: Project: Valhalla)

Santa Claus was in Lapland on Christmas Eve when his sleigh lost its magical flying power. He called the Thirteenth Doctor, who let him borrow her TARDIS to complete his annual job. (WC: 'Twas the Night Before Christmas)