Do you know where eden was located and what happen to it the bible tells us ?

Here, are a few facts that we do know: The Genesis account speaks of the garden as a real place. 

Two of the four rivers mentioned in the account the Euphrates and the Tigris, flow today, and some of their source waters are very close together. 

The account even names the lands through which those rivers flowed and specifies the natural resources well-known in the area. 

The rivers are meant to indicate that this is not a fairy tale, but rather something that actually happened here on earth. 

After Adam’s banishment from the garden, with no one to cultivate it and to take care of it, it may be assumed that it merely grew up in natural profusion with only the animals to inhabit its confines until it was obliterated by the surging waters of the Flood, its location lost to man except for the divine record of its existence.  Gen 2:15

NO IT DOES NOT MATTER CUZ IT IS LONG GONE NOW.

The original site of the garden of Eden is conjectural. The principal means of identifying its geographic location is the Bible’s description of the river “issuing out of Eden,” which thereafter divided into four “heads,” producing the rivers named as the Euphrates, Hiddekel, Pishon, and Gihon. (Ge 2:10-14) The Euphrates (Heb., Perathʹ) is well known, and “Hiddekel” is the name used for the Tigris in ancient inscriptions. (Compare also Da 10:4.) The other two rivers, the Pishon and the Gihon, however, are unidentified.

Some, such as Calvin and Delitzsch, have argued in favor of Eden’s situation somewhere near the head of the Persian Gulf in Lower Mesopotamia, approximately at the place where the Tigris and the Euphrates draw near together. They associated the Pishon and Gihon with canals between these streams. However, this would make these rivers tributaries, rather than branches dividing off from an original source. The Hebrew text points, rather, to a location in the mountainous region N of the Mesopotamian plains, the area where the Euphrates and Tigris rivers have their present sources. Thus The Anchor Bible (1964), in its notes on Genesis 2:10, states: “In Heb[rew] the mouth of the river is called ‘end’ (Josh xv 5, xviii 19); hence the plural of roʼs ‘head’ must refer here to the upper course. . . . This latter usage is well attested for the Akk[adian] cognate resu.” The fact that the Euphrates and Tigris rivers do not now proceed from a single source, as well as the impossibility of definitely determining the identification of the Pishon and Gihon rivers, is possibly explained by the effects of the Noachian Flood, which undoubtedly altered considerably the topographical features of the earth, filling in the courses of some rivers and creating others.

The traditional location for the garden of Eden has long been suggested to have been a mountainous area some 225 km (140 mi) SW of Mount Ararat and a few kilometers S of Lake Van, in the eastern part of modern Turkey. That Eden may have been surrounded by some natural barrier, such as mountains, could be suggested by the fact that cherubs are stated to have been stationed only at the E of the garden, from which point Adam and Eve made their exit.​—Ge 3:24.

I've already answered this for you.

It is a ficticious place.

Eze 28 does not "say" what you claim.
Rather: it teaches that the king of Tyre was at one time in Eden (without identifying where Eden is or was).

Eze 31
symbolically characterizes Assyria as a tree
and compares Assyria to other symbolic trees (i.e. other nations and/or city-states)
including "the trees of Eden", which "trees", in Sheol, were "comforted" at the fall of the tree that was Assyria.

Again: we aren't told where Eden was, but the whole passage is symbolic and suggests that "the trees of Eden" were nations previously conquered by Assyria. Thus, they being in Sheol before Assyria, were (in Sheol) comforted by Assyria's fall.


Locating Eden according to the Bible:

The Bible teaches that there were four rivers whose headwaters were in the garden of Eden. Two of those rivers are known: the Tigris and Euphrates.

Traditionally the source of those two rivers were both located in modern eastern Turkey, less than 100 miles apart, which (I think: not coincidentally) were not far from Mount Ararat.

So: if we imagine that Adam and Eve lived near to Eden after being exiled
and that Noah, only nine generations later, lived in the same locale
then it's not surprising that Noah's ark, having no means of propulsion, grounded in the same region.

In any case: it seems at least part of Eden was in modern eastern Turkey. How far it extended: we don't know. For example: it might have extended to include some or all of modern-day Lebanon...and other nations.

Right between Oz and Narnia

It says where it was located, and now it's gone. Guarded by 4 angels so know one can find it again.

Eden#1 where 1 river divided into 4 heads.
Eden#2 where 4 rivers formed into 1 head.

Eden#1 was in Africa. Lot referred to it as the "Garden of the Lord" in Genesis. After the so called "fall", Adam felt forced to leave Eden#1 and venture over 1000 miles east in search of the second garden (Eden#2) in Mesopotamia.

"History begins at Sumer".