[5][6] In 1990, the worthiness of preservation of the dilapidated chapel was confirmed by the Provincial Monuments Office, and in 1997 ownership was transferred to the newly founded "Verein zur Rettung der Schlosskapelle Mitterberg" (Association for the Rescue of Mitterberg Castle Chapel), which had the restoration carried out with the help of public funds and donations by 2003.
[4] On 31 August 2003, Bishop Maximilian Aichern and Superintendent Hansjörg Eichmeyer [de] consecrated the chapel.
The stuccowork shows connections to the Lambach Abbey and is outstanding in the Schwanenstadt region in Baroque buildings.
In niches of the chapel are four figures depicting Mary as Queen of Heaven, and the saints Joseph, Nicolas and Florian.
[1] A ceramic cross by the sculptor Franz Josef Altenburg has been attached to the north-west side of the chapel since 19 June 2011.