ShotHotspot has mapped 27 abandoned places in Middle Franconia, Bavaria, ranked by how often they're photographed, viewed and voted for. The most popular are Abandoned Graffiti Fabrik Kultur, Abandoned Nürnberg Verlassen Hochhaus and Fabrik Abandoned Factory Closeddown. Some are private property or unsafe, so get permission before you visit.
We don't know whether you're allowed to visit any of these places. Many are private property, closed to the public or unsafe: get permission from the owner or the relevant authority, and take safety precautions.