Friedberg is a town in the German state of Hesse. It is known for its well-preserved medieval castle, which served as a fortification and residence of local rulers. The castle is situated on a hill overlooking the town and is a significant landmark in Friedberg.

The town of Friedberg has a close relationship with the castle, as it was an important center of power and administration for centuries, though both belonged to different owners. The castle has undergone many renovations and expansions over the centuries, reflecting the changing political and military needs of the town.

The Adolfsturm is a tower within the castle complex. The tower provides panoramic views of the town and the surrounding countryside, and is a popular tourist attraction.