Schloss Thannegg, Medieval castle in Michaelerberg-Pruggern, Austria.

Schloss Thannegg in Moosheim, Michaelerberg, is a mainly three-storey castle whose old core, rectory and Kapuzinerstöckl enclose a horseshoe-shaped courtyard. Its only architectural ornament is an oriel projecting above the entrance gate, and Renaissance sgraffito remains survive in the courtyard. The tracts have Schopfwalm roofs, and the small late-Romanesque St. Michael's church with a round apse stands next to the castle.

Records of the old castle with its tower and St. Michael's church date to 1150. In 1346 the Bishop of Chiemsee acquired the estate, and in 1529 Bartholomäus von Moosheim bought it to pay the Turkish tax. His grandson Benedikt added two wings, the rectory and the Capuchin lodge. After use as a poorhouse, Ernst and Gerlinde Schrempf bought the ruin in 1984/85 and converted it into a castle hotel.

The castle church of St. Michael, next to the main building, served the noble residents; on the back of its altar a fragment of the Moosheim family tree is preserved. The former rectory opposite the church housed the priest's flat and a school. The complex is now run as a castle hotel, so the courtyard and buildings can be seen during hotel operation.

The castle is located at Schlossweg 1 and offers various accommodation options including suites and family rooms with modern amenities. Visitors should plan ahead as availability varies by season and advance booking is recommended for most visits.

Excavations in the deep cellar in 2002/03 uncovered a vault from 1150, and the original stone floor came to light again. The small late-Romanesque St. Michael's Church stands right beside the castle; on the back of its altar is a fragment of the Moosheim family tree.