It looks like a church doorway to me, a modest town church, but I think it is a scene against a wall to suggest a nicer setting so probably a studio.
Do I see a carpet up steps?
White was not always worn, , many could only afford their best clothes.
My paternal grandmother wore a tweed dress with leg of mutton sleeves ,back in 1896, and it was a Church wedding and no pregnancy.
The bride does not look very young so perhaps a second marriage , but my grandmother was 30 when she married,born 1866.
Not all men wore/wear rings , my O,H didn’t .
It could be after a funeral , but then why a photo?
Hope you get more info.Viktoria.