Güssing is a town in Burgenland, Austria. It is located at 47°4′N 16°19′E / 47.067°N 16.317°E, with a population of 3,610, and is the administrat…Güssing is a town in Burgenland, Austria. It is located at 47°4′N 16°19′E / 47.067°N 16.317°E, with a population of 3,610, and is the administrative center of the Güssing district. For centuries the town occupied an important position on the western edge of the Kingdom of Hungary. The town is now most famous for its castle, which is the oldest in Burgenland and a prominent regional landmark, built on an extinct volcano.