Valerio Olgiati has worked as an architect in Los Angeles, Zurich, and, since 2008, in Flims. He has been a visiting professor at the Eidgenössische Technische Hochschule (Swiss Federal Institute of Technology) in Zurich, the AA in London, and at Cornell University in Ithaca, New York. Since 2002 he has been professor at the Accademia di architettura in Mendrisio and since autumn 2009 he has held the Kenzo Tange Chair at Harvard. The unmistakable straight lines and independence of his buildings has brought him international attention. The Olgiatis family estate is located in the historical town center of Flims. Rudolf Olgiati (191095) purchased the property, known as Dado, in 1930 and throughout his life used it to realize his architectural thoughts and ideas. Today, the son is living in his fathers house, and in 2008 he set up his much-admired architectural firm on the former site of the barn. This publication portrays the life and work of both architects using the example of the house and studiothat is, through the transformations they have undergone at the hands of their residents over a period of nearly eighty years. It shows personal furniture and objects, the individual layout and design of the spaces, and hence the penchants and attitudes of the two architects. At the same time this unusual portrait documents not only the relationship between father and son but also the characters of two generations and their understanding of architecture and aesthetics. Valerio Olgiati arbeitete als Architekt in Los Angeles, Zürich und seit 2008 in Flims. Er unterrichtete als Gastprofessor an der ETH Zürich, der AA London und der Cornell University, New York. Seit 2002 ist er Professor der Accademia die architettura in Mendrisio, ab Herbst 2009 führt er in Harvard den Kenzo Tange Chair. Seine Bauten finden aufgrund ihrer unverwechselbaren Geradlinigkeit und Eigenständigkeit inzwischen internationale Aufmerksamkeit. Im alten Ortskern von F