Around 1900, an electricity plant was built in the former Ermen & Engels cotton mill, which also supplied the town with electricity.

At the Petersberg site, you can experience the eventful history of the site in an authentic setting. The visitor center, which consists of five areas, is located at the driveway to the building complex. It is home to a unique exhibition. The journey ranges from Konrad Adenauer's legendary "carpet scene" to the state visits of the economic miracle era and the Afghanistan conferences shortly after the turn of the millennium. In addition, one part of the exhibition looks at the nature of the Petersberg. Another focuses on the building's former function as a guardhouse and its security equipment.