Hey, what's this?! Santa Claus and sauna are part of Finnish heritage, not Swedish or Norwegian. Wikipedia knows it:

Santa Claus

The American version of Santa Claus lives at the North Pole, while Father Christmas is said to reside in Finland.

Sauna

A sauna (pronounced /ˈsɔːnə/, or as Finnish [ˈsɑunɑ]) is a small room or house designed as a place to experience dry or wet heat sessions, or an establishment with one or more of these and auxiliary facilities. These facilities derive from the Finnish sauna. The word sauna is also used metaphorically to describe an unusually hot or humid environment.