The whole "ZEGG" area is tagged with `amenity=school`.

But that seems really incorrect to me.

It is an intentional community with private living spaces, worlshops, and which also hosts seminars.

I suggest that a more proper tagging should be thought of; maybe just remove "amenity=school", and have some place tag (neighbourhood, hamlet, city block, ... -- I do not know what really fits here)?

The round terrace around the "Rundraum" building part should also be circular.

`building:place=yes` does seem to be a wrong tag for this area. See building:place=*

Many nodes of the building parts are not aligned on the multipoligon which actually should resemble the overall building.

One example is exactly here; another one I have noticed to the left.

Needs to be checked thoroughly and fixed.

Here is a larger area that (currently) has no (high) trees.

Here is a `tourism=information` `information=...` board.

Most probably the board a few metres to the east, where the path to "Freie Feldlage" branches off, is not there but here.

Around here is a footpath, going on the south side of the stream and then up to the field, continuing at the edge of the field.

Here is a barrier=chain with a sign saying that it is a car-free area behind (so tag the way behind accordingly, too).

via StreetComplete_ee 58.2

A path branches off here.

via StreetComplete_ee 58.2

Using a circle geometry tool (e.g. in JOSM), this could be made a circle shape. Currently it is something deformed.