Lighthouse photo from 1962

In 1962, my parents went to Europe, bought a VW and toured Scandinavia. This was a photo taken from a ferry approaching Oslo. My mother wrote that is was "from boat toward old house" and then added what was written on the wall - "Avfall ma ikke Kastea Oslefjorden"



I went to the eye doctor today and my eyes are a little dilated, but this looks to me like Lighthouse Dyna except that the little house in the front doesn't have a red roof. What do you think?

Yes looks like this is Dyna (repainted), there are some other photos in internet
By the way, looks like this is some kind of the traditional old LH of Oslofjord, there is one more LH looking very similar, named Heggholmen - AFAIK it's oldest in Oslo area.

Yes it looks like a church. Is the light in the little house or is it in the steeple

Here

Must be a lighthouse. Seems like an odd place for a church!

But why have a steeple on a lighthouse?

May be for fog bell?