Burg Güssing is a castle in southern Burgenland, Austria. On June 30, 1524, the castle was acquired by the Batthyány family, who retain ownership to this day through a historical foundation that provides for the care and maintenance of the castle.
Around 1157, a small wooden fort is said to have been built by Count Wolfer, and it is thought though that the first occupants were the Benedictines. The name of "Our Holy Mary of Snow" as the chapel are mentioned in documents dating back to this time, which would indicate that there was at least a crude abbey or monastery at the site. Ownership of the structure later passed to King Béla III, who strengthened the original wooden structure with stone walls. Since 1198, Güssing became known as "Novum Castrum".