Moshe Safdie: What makes a building unique?

http://www.ted.com Looking back over a long career, architect Moshe Safdie digs deep into four extraordinary projects to talk about the unique choices he made on each building -- choosing where to build, pulling information from the client, and balancing the needs and the vision behind each project. Sketches, plans and models show how these grand public buildings, museums and memorials, slowly take form.