David Chipperfield has contributed an interview to the recently published book ‘Baukollegium Berlin’, edited by Berlin Senate Building Director Regula Lüscher. The Baukollegium is an independent advisory body made up of experts in the field of architecture, planning and urban development. The book reflects on the body’s role in the development of the city. It promotes the culture of building with examples that present their working methods and includes interviews and essays about Berlin. In his interview, David Chipperfield discusses the importance of good urban planning, looks at the differences between Berlin and London while considering the dangers Berlin faces moving forward.