I had a great chance to experience half artificial and half natural occurance.
While we had extremely low temperatures in Tartu, Estonia, here and there in the city one could see light pillars.
A light pillar is an atmospheric optical phenomenon in the form of a vertical column of light which appears to extend above and/or below a light source. It wasn’t as good, as when you Google it, but an exciting photography opportunity for me.
I contacted several online portals and send my photos to them. Got some feedback and they published my photos, which is great!
Have a look here: DELFI light pillars.
Weather and peopleLight pillars in Tartu
