Old one (2015)
Wow!!! Amazing work! Perhaps a swing on the right side would add a nice touch?
yo this some supa hot fiya render m8
overtranslucenced tree leaves … try to darken the color of the translucent shader… And Bumps/normal displacement are too strong … try to reduce the value…
nice work tho 
Wood is to bumpy and uniform. That is the biggest issue. As a whole, great work!
i like the way with the stones!
nid is right with the uniformity of the wood.
regards
thomas
Thank for comments. I will work on my mistakes.
Architecture-wise, it would be insane to build a structure like that. The main load-bearing column (the trunk) has been hollowed out and badly weakened.
But creativity-wise, I like it. That would be great for a modern fantasy setting.
It could be done in reinforced concrete and made to look like a tree trunk.
I love the concept and the palette! And great render, too. An amazing work!
Thats a super cool design with the stairs carved into the tree, Awesome job.