During the course of an illustrious 50-year career that took him from the Bauhaus to London, Harvard University, and then New York, architect Marcel Breuer (1902-1981) generated a huge, influential, and remarkably varied body of work. Among his hundreds of buildings are such architectural triumphs as the Whitney Museum of American Art in New York and the UNESCO headquarters in Paris. This is the first comprehensive study of Breuer's architectural oeuvre. To write it, architectural historian Isabelle Hyman utilized for the first time extensive unpublished archival material and collected hundreds of photographs, plans, and sketches. While Breuer has been best known for his tubular steel chairs and other furniture designs, this book makes clear why he received dozens of architectural honors and awards and was called "a monumental figure among modern architects."