 The three interconnected houses at the corner of the Stiftstraße and Prinz-Christians-Weg were built in 1904 according to plans by Joseph Maria Olbrich.The corner house (with pilaster strips made of bricks) and the “Blue House” (the ground floor is covered with blue-glazed tiles) were erected to be sold, while the “Grey House”, also known as the “Preacher House”, (which has a dark rough plaster surface) was designed as a residence for the court preacher.Olbrich designed the interior of the Grey House; Paul Haustein and Johann Vincenz Cissarz were responsible for the décor of the Blue House and some rooms of the corner house.