Ancient Rome already had rich public spaces, and public facilities such as squares, theaters, baths, galleries, lecture halls, canals and underground pipe networks were quite complete, far from our good old nose before the reform and opening up! Compared with the public space in modern life, the real difference is that there were no parks at that time, except for telecom spaces such as Internet cafes and cinemas. Parks are the product of industrialization. Before the birth of a democratic system in which social wealth really began to be shared by all, there were no parks, only private gardens. Oh, actually, democracy was not a strange word in the ancient Roman Empire. Under the previous Roman system, if slaves were not considered (slaves in that period were basically equivalent to our computers and machines now! ) existence, as far as the right to speak is concerned, is very equal to everyone. Our modern so-called democracy has also learned a lot from the ancient Roman system. On the other hand, there were no parks in ancient Rome at that time, and there was natural and fresh air everywhere, with no pollution at all! Therefore, ancient Rome without parks and only private gardens is not sad, but now, I don't know where there is heaven to find a fresh land. Closer to home, there were no parks in ancient Rome, only gardens, and the gardens at that time were only the continuation and perfection of the architectural space, and the landscape elements of the gardens were basically not independent of the architectural style. Therefore, the courtyard of ancient Rome inherited the architectural style of ancient Greece and the overall structural rules. Colonnade, clear central axis, simple geometric composition, platform, exquisite sculpture technology, plastic plants planted in rows, V-shaped trees and other elements are all common elements in ancient Roman courtyards. These elements are fully displayed in Hadrian's villa. The Kanop Canal, named after the Egyptian place name, is a famous leisure attraction in Hadrian's legend. The beautiful scenes seen from some archaeological relics still murdered countless movies, won countless focuses and earned the size and layout of more than N books. When we quietly watch the beautiful scenery of Hadrian Villa, we will find that the level of human construction technology today is not necessarily better than that before 2000. Moreover, this ancient Roman courtyard, which combines the three cultures of Europe, Asia and Africa, often shows the integration of architectural elements with different cultural backgrounds: vaults that highlight the outstanding craftsmanship of ancient Rome, exquisite mosaic floors, theaters and colonnades from ancient Greek civilization, drama masks, Syrian arches, materials collected from Egypt and Babylon, etc. These all reflect the grandeur of great integration. Historical records once described ancient Rome in the era of Hadrian and other five wise emperors as a paradise on earth. Today, the remains of Hadrian's villa convince me that a charming Garden of Eden has indeed fallen.