Just to point out that #8 doesn't necessarily discount Christianity, it just recognises the literary nature of the Bible and the role of myths in seeking to understand and communicate God's truth about our origins. It is OK to be a Christian and to not believe that the Garden of Eden is a literal place!
The book of Genesis tells us that four rivers flowed out of Eden: Gihon, Pishon, Tigris, and Euphrates. That would situate it somewhere in what is now the Middle East. The Tigris and the Euphrates are both in modern-day Iraq, but the location of the other two rivers is not known. The Gihon is said to "encircle the land of Cush," which most scholars agree is Ethiopia.
If we want to look at this topic a bit differently, we might note that quite a number of ancient cultures had myths that paralleled the Eden story. The Epic of Gilgamesh describes a plant that leads to immortality, guarded by a serpent, similar to the "Tree of Life" in the Garden of Eden. It also includes a Flood narrative. Hindu scriptures too have similar stories of plants of immortality guarded by serpents; the story of how the gods and demons fought over it is described in the Mahabharata. Hindu mythology also contains descriptions of the fall of humanity from an earlier state of goodness and perfection.
You're both obviously not Mormon, because they're taught that The Garden of Eden is in what is now modern-day Missouri. Without getting into a huge wrangle about religious beliefs, I firmly say, "I DO believe that it existed!"
Of course, no one can know if it ever existed. Since we do not know this, we do not know where it would have been. The speculation is that it would have been somewhere in Mesopotamia if it did exist. This is because the Bible says one river that came out of it was the Eurphrates. But it's hard to use that as proof because another river that comes out of Eden is supposed to "compass" Ethiopia.
The Garden of Eden didn't exist. It is as simple as that. The Bible says there was a magic garden somewhere (certainly not Missouri!) but this is just a myth to explain how the earth began. The story of the garden of Eden does not match any of the solid facts uncovered by science. It is simply a very old story, nothing more.
According to the holy book there was a garden of eden in the area where Irak is today .
It all comes down to one's religious beliefs if it existed or not. It is not historical unless it conflicts with one's beliefs. To say that it existed would be to say that the rest of the Bible is true and that everything in it happened and was real.