In 1927, Ludwig Mies van der Rohe presented his clients Hermann Lange and Josef Esters with an initial ground plan. Mies van der Rohe had just completed his work at the Deutscher Werkbund exhibition “The Appartment” in Stuttgart (Weissenhof Estate); in 1929 he was to be responsible for the so-called Barcelona Pavilion, an exhibition space for Germany at the World Exposition in Barcelona. Haus Lange and Haus Esters assume an interim position between the rational, geometrical approach to space that Mies took with his apartment block in Stuttgart and the open space concept behind the Barcelona Pavilion. Source

