This lecture discusses the concept of Garden Cities of Tomorrow, proposing a spatial model with polycentric, hierarchical, and balanced territorial systems. It explores the integration of urban and rural life, emphasizing the importance of public spaces, such as the Grand Avenue, and the benefits of grouping buildings for overall beauty and functionality. The presentation also covers historical examples like Crystal Palace and modern urban planning projects like Hampstead Garden Suburb and Milton Keynes, focusing on the harmonious combination of city and countryside elements.