Several years ago a friend of mine told me that as a child she and her family traveled to the many areas where her father was employed by Dole Food Company to manage the Dole plantations.   This included Iran and Iraq.  She said that the Garden of Eden was located in southern Iraq and there were signs proclaiming  that.  The area is now a drought stricken marsh.   I tend to think that the Garden of Eden was more likely at the other end of the Tigris and Euphrates rivers, ie.  Turkey or Armenia. I'll go with that thought and focus on that area.  Eden in the map is the are colored in a reddish brown.  Note the area called Nod. It is near the Caspian sea on the upper right of the map.  The Black sea is on the upper left. But this map requires investigation as to it's sources and veracity. 

Of all the people and places in this blog the Garden of Eden presents the most  difficult to research and verify.  There are so many ancient cultures and traditions that have different views about Eden. So far as I know there are no archeological sources.   I would prefer to go with the Hebrew traditions, but the Islamic sources are also helpful. Biblical Archaeology seems to  have it all wrong as far as I'm concerned.  It wrongly defines the source and the mouth of a river as being the same.  But an interesting read is here.