Unable to answer "What religion is practiced at this place?" for https://osm.org/way/538609612 via StreetComplete 44.1:

"cooperating with the gods from space". I have no idea what this place worships, but provided they include "talks on topics such as UFOs", I guess might be kind of a complotist movement.

Attached photo(s):
https://westnordost.de/p/107875.jpg