Alt-Hagenberg
Alt-Hagenberg is a château at Hagenberg im Mühlkreis, Freistadt District, Upper Austria, in Austria.

Burg Obernberg is a château at Obernberg am Inn, Ried District, Upper Austria, in Austria. The recorded building campaign dates from the 11th century. The register records it as “Listed objects in Austria”. 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.
Wikidata — notice Q1013376. CC0 1.0.
Wikidata — Q1013376 (CC0).
Luckyprof (Luckyprof (talk)) — CC BY-SA 3.0 at, via Wikimedia Commons.
Distances are measured straight line between the recorded coordinates, not along the road. Many of these are private and cannot be visited.
Alt-Hagenberg is a château at Hagenberg im Mühlkreis, Freistadt District, Upper Austria, in Austria.
Burg Friedburg (Innviertel) is a château at Lengau, Braunau District, Upper Austria, in Austria.
Burg Krempelstein is a château at Esternberg, Schärding District, Upper Austria, in Austria.