This lecture examines High-Tech architecture in workplace and office environments, tracing the evolution of technologically advanced office buildings and their design principles. It discusses key examples such as the Willis Faber & Dumas Headquarters, HSBC Headquarters in Hong Kong, Commerzbank Tower in Frankfurt, and 30 St. Mary Axe (Swiss Re) in London, highlighting innovations like open-plan flexible offices, prefabricated modular construction, suspended floor systems, diagrid structures, and intelligent building technologies. The lecture also emphasizes the integration of natural lighting, energy efficiency, sky gardens, and climate-responsive design, demonstrating how High-Tech architecture transformed workplaces into flexible, technologically advanced, and environmentally responsive environments.