and around the earth was a endless oscean with a water dragon in it. By the way was the world built by 3 pieces, Asgård, the centre with the tree, Midgård, The shithole we live in and Utgård, a wasteland with giants and shit. and then the ocean
I know that I'm not from a Nordic country and you are, so you could have most likely had this as a lesson in school or something, and I didn't, but I'll say something anyway. Wasn't there Nine Realms in the Yggdarsil Tree? The world we are in IS Midgard, which rests on the tree, and the other realms like Asgard (Aesir / Gods) and Jotunheim (giants), are in other spots of the tree as well. I could be wrong, since all I know about the myths are from what I read, and I sound like a nerd.
Ok i not find a photo so ... the huns and hungarians believed in a space tree. at the center of it was the sun and at every branch was one planet. And the hungarians belive that than one day the hungarian Csaba kiralyfi will came back from one constelation.
I think that I found a photo, but I don't know if this didn't apply, or that it was not visually descriptive enough, or that you found this pic but didn't use it, but here it is, anyway. https://imgur.com/a/vpxi9