Ravensberg may refer to:
The County of Ravensberg (German: Grafschaft Ravensberg) was a historical county of the Holy Roman Empire. Its territory was in present-day eastern Westphalia, Germany at the foot of the Osning or Teutoburg Forest.
Ravensberg was first mentioned in the 12th century; its first capital was Burg Ravensberg. The Counts of Ravensberg then had Sparrenberg Castle built in Bielefeld ca. 1240–50, which they made their seat.
The county was later inherited by the Duchy of Berg in 1346, which in turn became part of the Duchy of Jülich-Berg in 1423, and ultimately the United Duchies of Jülich-Cleves-Berg in 1521.
After the War of the Jülich succession, in the Treaty of Xanten in 1614, the County of Ravensberg came to the Margraviate of Brandenburg, which became the Kingdom of Prussia in 1701, and was administered within Minden-Ravensberg from 1719–1807, when it was dissolved during the Napoleonic Wars.
Aside from Bielefeld, other communities in the County of Ravensberg were Borgholzhausen, Halle, Steinhagen, Versmold, Werther, Isselhorst (now part of Gütersloh), Enger, Hiddenhausen, Rödinghausen, Spenge, Herford (except for Falkendiek), Bünde (except for Dünne and Spradow), Vlotho (except for Uffeln), Kirchlengern south of the Werre, Preußisch Oldendorf (except for Hedem and Lashorst) and Bad Oeynhausen south of the Werre.
The Ravensberg is a 659 m high mountain in the South Harz mountains in the German state of Lower Saxony. It is relatively isolated and visible for a long way. It lies in the district of Osterode am Harz, north of Bad Sachsa.
The mountain top is crowned with a prominent 64 m high tower, which was built in 1970. This tower acted as a listening post during the Cold War; today it is used by Deutsche Telekom.
The Ravensberg is a wonderful viewing point, and is also very easy to get to by car, a road about 3.5 km long, running up to the summit from Bad Sachsa. There is an old boundary stone, the Dreiherrenstein, on this road shortly before the summit. Until 1866 this was where the borders of the Kingdom of Prussia, Kingdom of Hanover and Duchy of Brunswick met. Today the Dreiherrenstein is the starting point for several walks, mountain bike routes and the South Harz cross-country skiing trail, that runs, for example, to the Stöberhai mountain and town of Braunlage. On the summit is a restaurant catering for day-trippers. There is also a skiing area with several downhill runs and 3 lifts.