This lecture focuses on Mies van der Rohe’s mature works, especially the Farnsworth House and the Seagram Building, which fully express his philosophy of “Less is More.” The Farnsworth House demonstrates his idea of “skin and bones” architecture, a minimal steel-and-glass pavilion elevated above the ground, with an open plan and strong visual connection to nature. The lecture contrasts Mies’s approach to nature, which frames the landscape through glass, with Frank Lloyd Wright’s more immersive organic integration. The lecture then examines the Seagram Building (with Philip Johnson) as a landmark of corporate modernism, highlighting its steel frame, bronze-and-glass curtain wall, strict proportional grid, and the introduction of a public plaza. It explains how this building influenced skyscraper design and urban planning, especially through the development of plaza-based zoning policies, reinforcing Mies’s lasting impact on modern architecture worldwide.