Yes. There were no machines that could help to automate construction much more than simple machines like pulleys, levers, and inclined planes.
the hanging gardens of Babylon was one of the most magnificient structures made by the sumerians. A ziggurat and a the hanging gardens of Babylon do not have anything in common.
Stone terraces
It was built 600 B.C.
The hanging gardens
The gardens are made of mud brick and stone, a series of terraces, one on top of the other. The hanging gardens are made by dried mud called mud brick. The mud brick was then use to make slabs sacked on top of each other to make the gardens.
The Hanging Gardens, built by Nebuchadnezzar II.
The Greek geographer Strabo, described the hanging gardens of Babylon as vaulted terraces which rose one above another, and rested upon cube-shaped pillars. He reported that the pillars, vaults, and terraces were constructed of baked brick and asphalt.
The thing with the hanging gardens is that the beauty has been narrated by so many historians that actually traveled to the city to see the gardens that it was made one of the Seven Wonders of the World even if they have not been seen for twenty two centuries.
Only Babylon. Tenochtitlan had the 'floating gardens' which in reality were man-made islands within the Lake Texcoco created for crop-growing.
The Code of Hammurabi, The Tower of Babel, The hanging Gardens made by King Nebuchunezzer, and the wealth and strength of the city
The gardens were built to cheer up Nebuchadnezzar's homesick wife, Amyitis. Amyitis, daughter of the king of the Medes, was married to Nebuchadnezzar to create an alliance between the two nations. The land she came from, though, was green, rugged and mountainous, and she found the flat, sun-baked terrain of Mesopotamia depressing. The king decided to relieve her depression by recreating her homeland through the building of an artificial mountain with rooftop gardens.
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