Simplify the following text for a Grade 4 native English-speaking person.
Original: Giza 's most famous archaeological site , the Giza Plateau , holds some of the most astonishing monuments in Egyptian history . Once thriving with the Nile that flowed right into the Giza Plateau , the pyramids of Giza were built overlooking the ancient Egyptian capital city of Memphis , which was near modern day Cairo .
Simplified: Giza is known for being the place where the Giza Plateau is .