If you like the bustling and colourful Nordstadt of Kassel, Germany (including its special and sometimes a bit freaky inhabitants) then the Boreal beer garden might be a good choice if you want to spend some time outside. It belongs to the Kulturzentrum Schlachthof and is located between this cultural institution and the Nordstadtpark.
The offer good drinks but currently, unfortunately, nothing to eat. The beer garden was founded and financed with the help of Crowdfunding. A stage makes it possible to bring cultural events from the Schlachthof to this nice outdoor place. Something like this was missing in this region of Kassel!