From Enoch, we learn that the Lord has created millions of earths like this one and that he has created a Zion on each. They are then brought back into the bosom of the Lord.
Moses 7:29-36 29 And Enoch said unto the Lord: How is it that thou canst weep, seeing thou art holy, and from all eternity to all eternity? 30 And were it possible that man could number the particles of the earth, yea, millions of earths like this, it would not be a beginning to the number of thy creations; and thy curtains are stretched out still; and yet thou art there, and thy bosom is there; and also thou art just; thou art merciful and kind forever; 31 And thou hast taken Zion to thine own bosom, from all thy creations, from all eternity to all eternity; and naught but peace, justice, and truth is the habitation of thy throne; and mercy shall go before thy face and have no end; how is it thou canst weep? 32 The Lord said unto Enoch: Behold these thy brethren; they are the workmanship of mine own hands, and I gave unto them their knowledge, in the day I created them; and in the Garden of Eden, gave I unto man his agency; 33 And unto thy brethren have I said, and also given commandment, that they should love one another, and that they should choose me, their Father; but behold, they are without affection, and they hate their own blood; 34 And the fire of mine indignation is kindled against them; and in my hot displeasure will I send in the floods upon them, for my fierce anger is kindled against them. 35 Behold, I am God; Man of Holiness is my name; Man of Counsel is my name; and Endless and Eternal is my name, also. 36 Wherefore, I can stretch forth mine hands and hold all the creations which I have made; and mine eye can pierce them also, and among all the workmanship of mine hands there has not been so great wickedness as among thy brethren. (emphasis added)
President Brigham Young taught that the eternal inheritances that are received through the law of consecration are received after the earth is Celestialized and placed in a cluster of Celestial Kingdoms, (click image to enlarge)