Great Blankenburg Castle (German: Schloss Blankenburg) was built on the limestone hill of Blankenstein (305 m above sea level) in the town of Blankenburg in the district of Harz in the central German state of Saxony-Anhalt. Nearby is the Little Castle with its baroque garden, tea house and museum, the town wall, the pheasant garden, the castle park and the castle pond.