Sparrenberg Castle, also known as the Sparrenburg is a restored fortress in the Bielefeld-Mitte district of Bielefeld, Germany. It is situated on the Sparrenberg hill (180m altitude) in the Teutoburg Forest and towers 60m above the city centre. Its current appearance mainly originated in the 16th and 19th century. The Sparrenburg is considered to be Bielefeld's landmark.