On June 1st 1928, the Spanish embassy in Berlin announced that Germany had already selected the architect in charge of projecting and designing the entire German section, that is, the architectural development of the area that German industries would have occupied in the various buildings: Mies Van Der Rohe.
Mies Van Der Rohe went to Barcelona twice to choose and analyse the spaces that he would have to use within each building assigned, and to find the best and most visible locations for the different industries. During the inspection, he noticed that, regardless of his project, the experience of the German industrial exhibition would be inexorably fragmentary due to the Montjüic exhibition grounds. Furthermore, the fact that German industries would occupy only part of the area of these structures (since they would be mixed with sections of other nations), this would have increased the likelihood of a disjointed and non-linear appreciation.
Later on, Mies Van Der Rohe had to find the best architectural expression for distinguishing the identity of the German factor– both in the area of structures reserved for national industries, and in the singular and pure national Pavilion he was projecting. Palaces and pavilions had to adapt the same style to reveal the same identity. Therefore, Van Der Rohe did not conceive the Pavilion only as a representative space for the opening ceremony: it had to be the starting point of a sequence that would reach the inside of the 8 neoclassical buildings where the German industries would be on display.
The project was so complex and interrelated with so many expectations. Although he could do whatever he wanted, since he had all the artistic power and freedom, this was the most difficult project he faced.