What are the materials use in the Philip Johnson Glass House?

The Philip Johnson Glass House, completed in 1949, primarily uses glass and steel as its main materials. The structure features glass walls that create a seamless connection between the interior and the surrounding landscape, while the steel frame provides structural support. Additionally, the house incorporates concrete for the floor and some elements of the foundation, enhancing its minimalist aesthetic. The use of these materials reflects Johnson's commitment to transparency and the integration of architecture with nature.