With the construction of the new theater at Kommandantenstr. 57 in 1906, comedians and actors Anton and Donat (née David) Herrnfeld realized their ideas of their own theater. Donat wrote the plays on bourgeois themes of morality and honor in Jewish families. The success of the theater was also due to its family character. This existed in the interaction with the audience, but also in the operational structure. The wives sat at the box office, sisters and children also played on the stage, the mother cooked in the theater kitchen.

The history of the Antiquarian Bookshop Emanuel Mai is based on three generations of a Jewish family: the founder Emanuel Mai (née Maier, 1812-1897), his son Max Mai (1842-1909) and his grandson Ulrich Mai (1873-1964).

The large Kaufhof building between Hohe Straße and Schildergasse in Cologne's city center catches the eye even as you pass by. Less obvious, however, is the building's history, which dates back to 1891, when Jewish merchant Leonhard Tietz set up his business in Cologne. 

In the years 1871/2 the "Villa Joachim" is built for the Jewish violinist, composer, conductor and music professor Joseph Georg Maria Joachim (1831-1907) and his family at the address Beethovenstraße 3/In den Zelten 10, north of the Berlin Tiergarten. 

Nearly ten years later, the adjacent building with the house number In den Zelten 9a was built in 1880.