The one node was mapped a both a tree and an artwork, I removed the tree-tag since it doesn't look like on on your photo and the aerial imagery.
Here's a visualisation of the full history of that node:  https://osmlab.github.io/osm-deep-history/#/node/9671925629.

The other comment is something about how to add wikimedia_commons tags. Both your and my way works, my way is a bit more 'modern'.