Haus Lange and Haus Esters are residential houses designed by Ludwig Mies van der Rohe in Krefeld, Germany. They were built between 1928 and 1930 in the Bauhaus style. The houses have now been converted into museums for Contemporary art.
Mies worked on the two designs simultaneously and the construction of each was begun within a day of the other's, thus both have a similar distribution of space. Those are not his typical houses with open plan, since in accordance with his clients' wishes Mies provided House Lange and House Esters in part with closed-off rooms - but without sacrificing any of the modern impetus in his designs.