Wonders of the World

This is one of the greatest achievement in human history and it is no longer here on earth, what I would give just to time travel.

"The Hanging Gardens of Babylon were one of the Seven Wonders of the Ancient World, a term given to it by ancient Hellenic culture. The Hanging Gardens were described as a remarkable feat of engineering with an ascending series of tiered gardens containing a wide variety of trees, shrubs, and vines. The gardens were said to have looked like a large green mountain constructed of mud bricks."