Mainzer Schloss, Castle complex on Stiftsberg, Heilbad Heiligenstadt, Germany

Mainzer Schloss is a three-story sandstone castle complex on Stiftsberg featuring a two-story annex and half-timbered outbuildings. A decorative entrance portal with a star design marks the main access to the compound.

The Oberamt moved from Rusteberg to Heiligenstadt in 1540, and its officials first used the Stiftskurie, then the Stiftskorn- and Stiftsbrauhaus. Elector Johann Schweikhard von Cronberg had these buildings demolished in 1603 and replaced with an Oberamtshaus, economic buildings and the Laurentiuskapelle. In 1732 Philipp Karl von Eltz-Kempenich made the office a Statthalterei; from 1736 to 1738 Johann Christoph Heinemann built the present palace, which survived the town fire of 1739.

The Laurentius chapel, demolished with the old Oberamtshaus, was rebuilt inside the new palace and remained accessible from outside. Its name recalls the earlier chapel on the same Stiftsberg site, where the archbishopric's administration had stood since around 900.

The building now serves as the administrative center for Eichsfeld district and has undergone renovation work. Visitors should note that some areas may have restricted access due to ongoing maintenance and administrative functions.

German writer Theodor Storm worked as a judge within these walls, leaving his mark on the region's legal history. His presence here connected the castle to both literary and judicial importance.