The winter in Finland is as nice as it can get. Snow and around -20 degrees Celsius. The nature is so white and clean and beautiful.
For some people this is really the time they are excited about the cold. My husband is one of those people who loves swimming in ice. I never do this, not because of the cold, but the water. I hate water and don't swim even in the summertime. Here is a picture of my husband having fun yesterday at sunset and that was about 3 pm.
Wikipedia has an article about Ice Swimming, in case you got excited about it.