Victor Vasarely designed facades for three Studio-Houses in his unique and unmistakable style. These precious facades were composed of thousands of square porcelain tiles and reflected the artist’s own Rosenthal designs. Vasarely’s works were part of Rosenthal’s contribution to the project "Art in the City". Unfortunately none of these facades exist anymore.

Source:
Henning Müller-Gerbes: „Bauen im Selbstverständnis eines Unternehmens" in
   „Materialien 3: Bauen für die Wirtschaft", Architektenkammer Rheinland-Pfalz, 
   1988
N.N.: „Rosenthal" in „Design Lexikon Deutschland", Dumont, 1992
Ulrich Kern: „Gebaute Unternehmenskultur", Industriebau, Heft 2/1992