This document discusses the history and key features of high-tech architecture. It began as a response to disillusionment with modern architecture in the 1970s, as technological advances led to a desire for new aesthetics. High-tech architecture uses materials like steel and glass in innovative ways, with structural elements exposed. It aims to showcase technology and engineering. Some famous examples include IM Pei's Bank of China Tower and buildings designed by Norman Foster and Renzo Piano. Key characteristics are steel and glass construction, flexible interiors, expressed structures, and use of color.