Having completed his diploma and PhD theses in 1964, Frei Otto was appointed professor at what was then Stuttgart College of Technology. It was especially for him that the Institute for Lightweight Structures was founded, a research institution that became famous after only a few years for its interdisciplinary methods. Professor Frei Otto was head of his institute and taught in Stuttgart for 26 years until he was made an emeritus professor. After that the institute became a "headless" or "roofless" institution. Many thought it would be disbanded. But today it is called the Institute for Lightweight Structures and Conceptual Design, headed by Professor Werner Sobek.