Burg Altenstein (Unterfranken) is a château at Maroldsweisach, Lower Franconia, in Germany. The recorded building campaign dates from the 13th century. The register records it as “architectural heritage monument in Bavaria”. Details are drawn from Wikidata.
Composed from the fields of the record itself — place, century, protection. Not written about the building, and not drawn from any source beyond those named below.