God's Garden of Eden was originally here, on earth, even before He formed Adam.
This is a pretty deep Biblical subject if one is not prepared for it in Bible study. In Ezekiel 31, God is pointing to Satan again using "the Assyrian" title. Much heavy metaphor about the high cedar, and the many trees under his shadow, and his roots were by great waters, and how he was exalted in God's Garden...
Ezek 31:3-8
3 Behold, the Assyrian was a cedar in Lebanon with fair branches, and with a shadowing shroud, and of an high stature; and his top was among the thick boughs.
The cedar in Lebanon is used as a symbol for royalty in God's Word (see Ezekiel 17). The above description is symbolic for exalted status.
4 The waters made him great, the deep set him up on high with her rivers running round about his plants, and sent out her little rivers unto all the trees of the field.
That idea of those "waters" running to rivers to his plants and all the trees of the field, is symbolic for God's River of the waters of life in that time. Verse 7 further below expresses this idea especially.
5 Therefore his height was exalted above all the trees of the field, and his boughs were multiplied, and his branches became long because of the multitude of waters, when he shot forth.
6 All the fowls of heaven made their nests in his boughs, and under his branches did all the beasts of the field bring forth their young, and under his shadow dwelt all great nations.
If one thinks God is pointing to the 'flesh' king of Assyria with this, then they won't think anything about that above "under his shadow dwelt all great nations". But in verse 8 further below, God is showing this one He speaks of here was once "in the garden of God". That means God's Garden of Eden.
And we know the 'flesh' king of Assyria never was in God's Garden of Eden.
7 Thus was he fair in his greatness, in the length of his branches: for his root was by great waters.
8 The cedars in the garden of God could not hide him: the fir trees were not like his boughs, and the chestnut trees were not like his branches; nor any tree in the garden of God was like unto him in his beauty.
KJV
So with that above "and under his shadow dwelt all great nations", if God is pointing to Satan with that "the Assyrian" title, God is actually giving us a hint of what happened here on earth before Satan as that "Assyrian" rebelled.
It means Satan was originally exalted in God's Garden of Eden before he rebelled, and he was even a king, like high royalty (cedar of Lebanon symbol). And under his shadow dwelt all great nations? Yeah! Hard for many to understand, but there were previous civilizations upon this earth prior to Satan's rebellion. That was the 1st world earth age, what Apostle Peter called "the world that then was", which perished by a flood (not Noah's day either).
In final, per Revelation and the Books of God's prophets, The Father Himself is going to return to this earth, bringing His Paradise of Eden with Him. And He will live with us. The new Jerusalem will even be called, "The LORD is there" (last verse of Ezekiel 48).