The Frankfurt kitchen was a milestone in domestic architecture, considered the fore-runner of modern fitted kitchens, for it realised for the first time a kitchen built after a unified concept, designed to enable efficient work and to be built at low cost. It was designed in 1926 by Austrian architect Margarete Schütte-Lihotzky for the social housing project Römerstadt in Frankfurt, Germany of architect Ernst May. Some 10,000 units were built in the late 1920s in Frankfurt.