As the only residential building in the 1904 exhibition of the artists' colony, an ensemble consisting of three houses was built on the corner of Stiftstraße and Prinz-Christians-Weg. Here, too, the client was Grand Duke Ernst Ludwig, and the group of houses was designed by the architect Joseph Maria Olbrich as an example of artistically designed homes "for the not overly wealthy citizen". The "Blue House" and the "Wooden Gable House", were for sale after completion, the "Gray House" served as a servant apartment for the court preacher Hermann Count Keyserling, who established his "School of Wisdom" there.

The residential buildings, separated from each other on the inside and each with a separate entrance, were placed next to each other on the irregularly cut plot of land in such a way that they formed a whole from the outside, but were clearly distinguished from each other by the different originally designed gables.