The Lowenburg Castle is a castle located in the northern part of the Bergpark Wilhelmshöhe in Kassel, Germany. The castle was built between 1793 and 1801 and was originally intended to be a hunting lodge. The Lowenburg Castle is known for its unique architecture, which features a mix of Gothic and Renaissance styles.

The castle has two floors, and the interior of the castle is decorated with elaborate frescoes and murals. The castle was designed to be a place where visitors could experience the romantic and exotic atmosphere of the Middle Ages, and it features several unusual features, such as a moat, a drawbridge, and a dungeon.

The castle was damaged during World War II, but it was restored in the 1950s and is now open to the public. Visitors can explore the castle's interior and learn about its history, as well as enjoy the views of the surrounding Bergpark Wilhelmshöhe. The Bergpark is a UNESCO World Heritage Site and features a variety of other attractions, including the Hercules Monument and the Löwenburg Castle.