ShotHotspot has mapped 22 abandoned places in Haut-Rhin, Grand Est, ranked by how often they're photographed, viewed and voted for. The most popular are Rodolphe Urbex Friche, Markstein and Zvereff Factory. 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.