Hardeg Castle

Hardeg Castle is a medieval fortress in Hardegsen featuring a 35-meter-tall main tower, known as the Muthaus, which is the oldest secular building of its kind in southern Lower Saxony. The structure displays typical medieval castle architecture with defensive elements and interior spaces designed for both administrative and residential purposes.

The original noble family of Rosdorf built the castle but faced financial strain from major renovations and sold it in 1379 to Duke Otto of Brunswick. After being expelled from Göttingen the following year, Otto made the site his new seat of government.

The great ceremonial hall in the main tower now serves as a registry office, blending medieval architecture with modern civic ceremonies. Visitors experience how a historic structure continues to play an active role in the community's everyday life.

The castle is managed by a Cultural Project organization that reinvests all rental income toward maintaining the historic structures. Visitors should check ahead of time, as opening times and accessibility may vary depending on ongoing preservation work.

The Muthaus tower has stood nearly 700 years without collapse, making it the oldest surviving secular structure in the region and a testament to its original craftsmanship. This remarkable durability reflects both the quality of medieval construction and centuries of careful maintenance.