Hibiya Park, located in the heart of Tokyo, is the first “Western-style” urban park in Japan in modern times and is an “urban installation” imported from Western “urban civilization” as opposed to the traditional garden culture and art represented by temples, shrines and daimyo’s private gardens, which have long been nurtured locally. It is considered an “urban installation” imported from Western “urban civilization”. This paper reveals the birth of Hibiya Park and the evolution of the park space through historical data on its development and the author’s field interviews. The study shows that Hibiya Park was born in the wake of urbanization in Europe and the United States, incorporating the American park planning theory and the park theory of the German People’s Park and that the local space and architectural facilities in the park showed different characteristics under the influence of social changes, war disasters, and the characteristics of the times. The evolution of the space of urban parks is also a reflection of the changing consciousness of the Japanese social subject, which reflects the change from the top-down-oriented educational consciousness opened by the emulation of European and American urbanization at the beginning to the people’s dominant consciousness of public space.