The history of rooftop gardens can be traced back to around 2000 BC. The "templo mayor Tower" built in the ancient Sumerian city downstream of the ancient Euphrates River (now Iraq) is the birthplace of the roof garden. In the early 1920s, Sir Lund Woolley, a famous British archaeologist, found traces of planting trees on the third floor of the tower. The real roof garden is the famous Babylonian "Hanging Garden", which was discovered more than 65,438+0,500 years after the ancient Assyrian temple tower. It is listed as one of the "Seven Wonders of the Ancient World" by the world, and its significance is not only an achievement in gardening art, but a masterpiece of ancient civilization. The "Hanging Garden" in Babylon was in 604-562 BC. Nebuchadnezzar II, the new king of Babylon, married a beautiful Persian princess Semiramis, who missed her hometown day and night and was unhappy. In order to please her, the king ordered a mound to be built in Babylon in the plain area, and a platform with a length of1.25m and a height of 25m was built on the platform to plant flowers and trees everywhere. The construction of the Hanging Gardens consumed a lot of manpower, material resources and financial resources, which were enjoyed by the royal aristocrats and embodied the luxurious life pursued by ancient emperors.