Final answer:
The specific building at the University of Chicago where Sergio received his award cannot be identified without additional information. The Chicago School of Architecture and its architects like Van der Rohe are referenced, but they do not provide enough context to answer the question about Sergio's award.
Step-by-step explanation:
The building at the University of Chicago where Sergio received his award is not specified in the provided reference materials. To accurately answer this question, additional specific information or context regarding Sergio's award is needed. The references do mention various architects associated with the Chicago School of Architecture, such as Van der Rohe, who designed significant buildings like the IBM Plaza in Chicago.
However, without explicit information on the award or Sergio, it is impossible to determine the exact building where the award was presented. It is also crucial to note that the University of Chicago Photographic Archive could offer insights if we had access to the relevant documents, images, or detailed descriptions.
Chicago's architecture has a rich history, and buildings from the turn of the 20th century by Chicago School architects are celebrated for their innovative use of steel-frame construction and stylistic contributions to modernism. While this architectural heritage is not directly related to the question, it underscores the cultural and educational milieu of the city, which might be the broader context of the award ceremony in question.