The International Building Exhibition (Interbau) was an architectural project in which a number of prominent international architects designed buildings for the reconstruction of the Hansa quarter of Berlin after World War II. After the buildings were constructed, the exhibit was officially opened in July 1957. Many of the buildings still stand today, including those designed by Le Corbusier, Oscar Niemeyer, Arne Jacobsen, Alvar Aalto, and Walter Gropius. Situated in a park, Interbau showcased an array of designs by the foremost Western architects from many countries, with high and low-rise buildings merging seamlessly with the landscape and greenery.