This elective deals with the introduction of glass into architectural design as a modern material. The use of glass will be studied in experimental buildings by modern architects such as Mies van der Rohe, Le Corbusier and Pierre Chareau. The concepts of transparency, opacity, translucency and "light architecture" will offer students a useful vantage point to consider the re-emergence of glass in recent works of architects such as Rem Koolhaas, Herzog & de Meuron and Peter Zumthor. Assignments will include discussions on readings and short essays on some exemplary buildings. This course will be offered in electronic seminar format.