Climbed to a tower in the area to see the views all over Hollola landscapes. It was about -20C but felt more like at least -30c at the top of the tower.
The observation tower is located around here on the hill in the area behind the church (Hollolan kirkko): Google Maps
You get nice and very Finnish views from that tower. I recommend.
And if you have some creativity and some tele lenses you might see something otherwise interesting too.