Hohenfreyberg Castle (German: Burg Hohenfreyberg), together with Eisenberg Castle directly opposite, forms a castle group in the southern Allgäu that is visible from a long way off. It is located about four kilometres north of Pfronten in the county of Ostallgäu. The late mediaeval hilltop castle was abandoned during the Thirty Years’ War and set on fire. From 1995 to 2006 the former aristocratic seat was comprehensively made safe and conserved as part of a closely observed "example of renovation".