Why does Lubeck have a hippie commune in the middle of town?

I was street viewing Lubeck and noticed this weird looking street layout and found this! https://maps.app.goo.gl/JUmvhxxfm7rM7R7p9

I was surprised! I was like I have one of those 20 minutes down the road! https://youtu.be/kTZBtauKvrc?si=vV1tZFjcBd-jNfRE . But usually in the US they are kinda out in the boonies. Does efficient land use concentrate them in Germany into more central locations?