Architecture is a discipline that is actively engaged in the interests of both technology and art. In architecture, especially in modern architecture, functional and performance attributes as well as aesthetic aspects are produced through the functionalities and limitations of technology. The very products of modern technology – from form-making structures to surface-defining enclosures – are assembled to create architecture. Physical components of architecture are nothing but cold steel members, massive concrete, mass timber, aluminum panels, various kinds of glass panes, etc. However, once these elements are put together on a specific site in a certain way through the process of design and construction, they are no longer mere technological elements. They are transformed into the components of both the functional and the aesthetical. Tall buildings are, in a sense, the accumulation of the most advanced modern architectural technologies due to their extreme height. Because of their enormous scale, the impacts of their architectural aesthetic expressions are also significant in any context where they soar. This seminar investigates the dynamic interrelationship between technology and architecture in tall buildings. It reviews contemporary design practice of tall buildings through a series of lectures and case study analyses and presentations. While most representative technologies for tall buildings are studied, an emphasis is placed on more recent as well as emerging technologies, and their architectural potentials are explored. Finally, this course culminates in a tall building design project and presentation.