Simplify the following text for a Grade 7 native English-speaking person.
Original: The Hanging Gardens of Babylon ( also called the Hanging Gardens of Semiramis ) and the walls of Babylon ( near present-day Al Hillah in Iraq ) are one of the Seven Wonders of the World .
Simplified: The Hanging Gardens of Babylon are considered to be one of the original Seven Wonders of the Ancient World . They were built in the ancient city-state of Babylon , near present-day Al Hillah , Babil , in Iraq .